hard;  solid;  stiff;  tight;  strong;  firm (not viscous or easily moved);  safe
 to harden;  to solidify;  to become firm;  to become certain;  to gather (together);  to assemble
 to harden;  to freeze;  to put together;  to collect;  to make secure;  to stabilize;  to fortify
 fixing (in place);  being fixed (in place);  fixing (e.g. salary, capital);  keeping the same;  fixation (histology);  user name (on an online forum like 2ch where the majority of users post anonymously)
 stubborn;  obstinate;  pigheaded
 firm;  strong;  solid;  stable
 firm;  determined;  resolute;  conclusive
 characteristic;  traditional;  peculiar;  inherent;  native;  eigen-
 firm;  unshakeable;  resolute
 sticking to (an opinion, theory, belief, etc.);  clinging to;  adherence;  persistence;  insistence
 to settle down;  to get a steady job;  to marry and raise a family;  to attire oneself;  to outfit oneself
 obstinate;  stubborn;  obdurate;  headstrong;  willful;  perverse
 lump;  mass;  group;  crowd;  embodiment (of an idea, quality, feeling etc.);  personification
 to coagulate;  to curdle;  to be fanatical;  to be obsessed with;  to stiffen;  to become stiff
 to hold one's breath (in fear, anxiety, etc.)
 hardening;  fortifying;  pledge;  vow;  defense;  defence
 coagulation;  freezing;  solidification
 to hold one's breath (in fear, anxiety, etc.)
 saliva held in one's mouth during times of tension
 to coat a surface with something that adheres strongly when hardened (i.e. grout, plaster, lacquer);  to cover up (e.g. truth);  to varnish (e.g. with lies, rumors)
 solid (body);  solid matter;  solid-state
 stubborn person;  bonehead;  bullethead;  pig-headed person
 obstinate;  inflexible;  thickheaded
 thickheaded;  obstinate;  inflexible;  stubborn
 to tread down so as to harden (soil, snow, etc.)
 fixed idea;  idée fixe;  stereotype;  prejudice
 solid (body);  solid matter;  solid food
 to hold one's breath (in fear, anxiety, etc.)
 to agree on the principle;  to firmly establish a policy
 watching (esp. during an emergency);  being on alert;  guard;  watchmen
 landline telephone;  fixed-line telephone
 adherence;  sticking (to);  fixation
 to make a firm resolution
 violently disagreeing;  strongly opposing;  setting one's heart against
 adversity strengthens the foundations;  after a storm comes a calm;  what doesn't kill you makes you stronger
 stubborn (obstinate) father;  pig-headed old man
 having one's guard up;  not showing weak points;  (of women) resisting attempts of being hit on;  being distrustful of potential love interests;  prudish
 (penalty of) imprisonment
 tight-lipped;  able to keep a secret
 adherence (to one's beliefs) (positive nuance);  persistence;  sticking to one's guns;  standing one's ground
 imprisonment (without forced labour);  incarceration;  confinement
 real estate tax;  fixed assets tax;  property tax;  rates
 built-in audience;  regular customers
 reef knot;  flat knot;  square knot
 to harden earth into a mass
 stubborn;  obstinate;  sticking to one's views or decisions
 ground leveling;  ground levelling;  groundwork;  laying foundations
 from the beginning;  from the first;  all along;  of course
 gathering evidence;  collecting evidence
 formal;  strict;  ceremonious;  stiff
 to fabricate a web of lies
 firm;  strong;  solid;  stable
 characteristic vibration;  normal mode
 stubbornly sticking to old ways;  dislike of new things;  narrow-mindedness
 regular pay;  fixed salary
 fixed cost;  fixed expense
 firm;  solid;  inflexible;  immovable
 cup of sake used to drink to the establishment of a partnership, commitment to marriage, etc.;  nuptial cup of sake
 octopus hold (wrestling);  grapevine stretch
 hardening point;  freezing point;  congealing point
 coagulant;  coagulating agent
 (a fortress being) impregnable;  unassailable
 obstinate;  stubborn;  hard-headed;  being incapable of making sound judgments because of a narrow, inflexible and obstinate mentality
 groundwork;  preparation;  walking practice;  strengthening one's legs;  leg hold (wrestling, judo, etc.);  wooden beam that joins underfloor pillars
 tooth hardening toy (for infants);  teether;  teething ring;  tooth hardening meal;  New Year's feast
 blood clotting;  blood coagulation;  coagulation;  coagulant
 very cautious (watchful, vigilant);  taking every possible precaution
 grappling technique (e.g. judo)
 cup of sake used to drink to the establishment of a partnership, commitment to marriage, etc.;  nuptial cup of sake
 let's put formalities aside;  let's not speak so stiffly
 serious topic (of conversation)
 anticoagulant agent;  anticoagulant drug;  anticoagulant
 being of firm (unshakable) faith and strict practice
 yoko-shiho-gatame (judo hold in which the opponent's shoulders and hips are pinned)
 figure-four (pro wrestling move);  figure-four leg lock
 being faithful to one's principles;  being of firm purpose and deep commitment;  constancy;  true blue
 unshakeable (e.g. belief);  invincible;  steadfastness;  firmness;  unwavering (e.g. support);  absolutely secure
 impregnable fortress;  heavily guarded fort
 solid (an assured, a safe) vote;  solid (assured) support
 bouillon cube;  stock cube
 feed-in tariff system (e.g. solar power);  fixed price purchase system
 chunk of meat (e.g. for grilling);  joint of meat
 tate-shiho-gatame (judo);  vertical four-quarter hold
 making replacements for defensive purposes in the late inning of a game
 anticoagulation;  anticoagulant
 fixed idea;  idée fixe;  obsession;  fixation
 to make up one's mind (to do something);  to resolve firmly (to do something)
 of strict morals (moral principles);  highly moral
 fixed length (e.g. block)
 to make up one's mind (to do something);  to resolve firmly (to do something)
 firm and solid;  stout and durable
 rigidity (e.g. muscular);  rigor
 arteria hepatica propria;  hepatic artery proper;  proper hepatic artery
 strong determination;  strong-willed;  having strong will power;  firmness of purpose
 determined;  steadfast;  unswerving;  unshakable
 fixed exchange rate system
 fixed exchange rates;  pegged rate of exchange;  fixed rate
 firm;  resolute;  absolutely
 stubbornly sticking to old ways;  narrow-mindedly rejecting other people's views
 obstinate;  stubborn;  narrow-minded
 tangible fixed assets;  tangible property;  property, plant and equipment;  PPE
 life imprisonment without work
 online handle (esp. on an online forum like 2ch where the majority of users post anonymously);  screen name;  user name;  user who uses an online handle (instead of posting anonymously)
 stiff consistency;  thick paste
 factory mark;  manufacturing plant identification mark (on goods)
 fixed lateral;  fixed side;  fixed part
 chaste (usu. to one's husband);  faithful
 to close or shut tight;  to warn sharply
 nitrogen fixation (method)
 yoko-shiho-gatame (judo hold in which the opponent's shoulders and hips are pinned)
 to coat a surface with something that adheres strongly when hardened (i.e. grout, plaster, lacquer);  to cover up (e.g. truth);  to varnish (e.g. with lies, rumors)
 incarnation of selfishness;  lump of avarice
 firm;  resolute;  absolutely
 tooth hardening toy (for infants);  teether;  teething ring;  tooth hardening meal;  New Year's feast
 Pangu;  creator of heaven and earth in Chinese mythology
 grappling technique (e.g. judo)
 major imprisonment;  imprisonment with hard labor (hard labour)
 feed-in tariff system (e.g. solar power);  fixed price purchase system
 feed-in tariff system (e.g. solar power);  fixed price purchase system
 tate-shiho-gatame (judo);  vertical four-quarter hold
 minor imprisonment;  imprisonment without hard labor (hard labour)
 to close or shut tight;  to warn sharply
 to put on a moderate amount of lean or firm weight;  to gain healthy weight (e.g. from muscle);  to become overweight as opposed to obese
 coagulation;  clot;  enthusiast;  fanatic
 firmness;  hardness;  stiffness;  honesty
 stiff-consistency concrete
 headstrong;  obstinate;  bullheaded
 obstinate;  stubborn;  hard-headed;  pigheaded;  incapable of making sound judgements because of a narrow, inflexible and obstinate mentality
 firm and solid;  sturdy and indestructible;  unshakable;  adamantine
 landline telephone;  fixed-line telephone
 fixed exchange rate system
 nonprogrammable calculator
 solid-state imaging device
 fixed radix (numeration) system;  fixed radix notation
 fixed radix (numeration) system;  fixed radix notation
 fixed-point representation system
 permanent connection;  fixed connection
 native collating sequence
 inherently optional token
 permanent virtual connection;  PVC
 Permanent Virtual Circuit;  PVC
 heat fixing;  heat setting
 proper map;  map such that the inverse image of a compact set is compact
 Bouin's solution;  Bouin's fluid;  Bouin's fixative
 eating only one's favourite food;  having an unvarying diet;  eating poorly
 terrestrial planet;  rocky planet
 non-fat milk solid;  milk solids-not-fat;  MSNF
 pinned tweet (that always appears at the top of one's account page);  stickied tweet
 pinned tweet;  stickied tweet
 non-crystalline solid;  amorphous solid
 carbon fixation;  carbon assimilation
 carbon fixation;  carbon assimilation
 fixed-price purchase system (electricity);  feed-in tariff system
 fixed-price purchase system (electricity);  feed-in tariff system
 fixed-price purchase system (electricity);  feed-in tariff system
 characteristic polynomial