candidate;  contender;  prospect;  candidacy;  candidature;  nomination
 to supplement;  to make up for;  to compensate for;  to cover (a shortage, loss, etc.);  to fill (e.g. a vacancy)
 replenishment;  supplementation;  supplement;  replacement;  refilling
 assistance;  support;  subsidy;  supplement;  auxiliary;  subsidiary
 supply;  supplying;  replenishment
 aid;  help;  assistance;  assistant;  counselor;  counsellor
 candidacy;  standing as a candidate;  bidding (to host an event, e.g. the Olympics)
 correction;  revision;  compensation (e.g. to a pendulum)
 reinforcement;  strengthening
 complementation;  supplementation;  completion
 compensating;  making up for;  supplementation
 hydration;  rehydration;  to hydrate;  to rehydrate;  to moisturize
 assistant ...;  probationary ...
 guidance;  protective custody
 filling a vacancy;  supplementation;  substitute;  deputy;  alternate
 assistant;  adjunct;  lieutenant
 assistance payment;  subsidiary aid
 favorite (top choice) for the championship (favourite);  best bet for the title
 most likely contender;  prime candidate;  top prospect;  leading candidate
 proposed site;  site chosen
 supplementary explanation
 candidate (for an election)
 major contender;  strong (leading) candidate;  front runner
 to make up a shortfall;  to cover a shortage;  to compensate for a shortage;  to fill a gap
 supplementary classes or lectures
 rival candidate;  opposing candidate
 supply route;  supply road;  communications (military)
 compensating;  making up for;  supplementation
 military cadet;  officer cadet
 revised budget;  supplementary budget
 training wheels;  stabilizers
 supply base;  storage depot
 compensation payment;  reparation
 supply vessel;  replenishment oiler;  replenishment vessel
 special election;  by-election
 replenishment;  supplement;  reparation
 extending (e.g. a book);  augmenting;  enlarging;  supplementing
 adjust (by supplementing)
 auxiliary device;  auxiliary equipment
 supply vessel;  supply ship;  cargo spacecraft
 supplementary information
 complementary;  supplementary
 supplement;  addendum;  appendix
 nutritional supplement;  dietary supplement
 supportive (role);  assistant;  assisting
 oral rehydration solution
 complementary color;  complementary colour
 mending;  revision;  supplementation;  (dental) prosthesis;  prosthetic
 supplement;  appendix;  addendum
 bye-election;  by-election
 retouch;  correction;  improvement
 auxiliary seat;  booster seat;  baby seat
 dietary supplement (for sports);  energy supplement;  nutritional supplement
 enlarged and revised edition
 candidate for vice-president;  running mate (US)
 complementary set;  complement
 assistance dog;  helper dog
 giving the Emperor advice on affairs of state;  assistance;  counsel
 to appoint;  to assign;  to designate
 rehydration;  supply of water
 camera shake compensation;  image stabilization;  input stabilization (touchscreen, pen, etc.)
 auxiliary storage;  secondary storage
 revising (and supplementing);  expansion
 supplement;  supplementary volume
 complementarity;  complementation
 assistant judge;  judge-in-training
 simultaneously running for a seat in a single-member constituency and a seat in a proportionally represented constituency
 assisted reproductive technology;  ART
 supportive device (for the disabled, e.g. prosthetic limb);  assistive device
 revising (and supplementing)
 supplementary kanji;  5,801 kanji coded in JIS X 0212 to supplement those in JIS X 0208
 spare player;  substitute;  sub;  benchwarmer
 external storage;  auxiliary storage
 supplementation;  replenishment;  compensation;  indemnification
 to bridge a gap;  to supply a lack
 addition (to a text);  additional entry (e.g. to a database)
 camera shake compensation;  image stabilization;  input stabilization (touchscreen, pen, etc.)
 list of candidates;  slate;  list of nominees
 complement (blood proteins)
 complementary therapy;  complementary medicine;  alternative medicine
 hormone replacement therapy
 walker;  walking frame;  Zimmer;  Zimmer frame
 supplementary explanation;  supplementary information
 adding something to or altering a finished work of art;  something added or altered in this manner
 Assistant Secretary of State
 subsidiary verb (in Japanese);  auxiliary verb
 auxiliary intervenor (in a lawsuit)
 subsidiary coin;  subsidiary money
 camera shake compensation;  image stabilization;  input stabilization (touchscreen, pen, etc.)
 support;  supplement;  help
 candidate for assassination
 adjuvant;  revitalizing stimulant (in Chinese medicine)
 filling a vacancy;  supplementation;  substitute;  deputy;  alternate
 revitalizing treatment that stimulates the organs or the meridians (in Chinese medicine)
 further education;  supplementary education
 error correction;  error detection and correction
 party appointee in a safe constituency; (lit.) parachute candidate
 government subsidy;  state aid;  state assistance
 changing (governmental) posts
 prefixed unit of measurement (i.e. millimeter, kilogram, etc.);  supplementary SI unit (radian and steradian)
 assistance dog;  helper dog
 adaptive optics (esp. in a telescope)
 ever unsuccessful candidate;  persistent candidate
 supplementary or additional fertilizer (fertiliser)
 auxiliary seat;  booster seat;  baby seat
 supplementation;  replenishment;  compensation;  indemnification
 supplementation;  replenishment;  compensation;  indemnification
 carrying on a second line of work
 forward arming and refueling point
 subsidized interest payments;  subsidised interest payments
 appointment to an official post
 revised and enlarged (edition)
 dispersion compensation calculation sheet
 corroboration;  supporting evidence
 person subject to a limited guardianship
 auxiliary intervention (in a lawsuit)
 compensation to the bereaved family
 left ventricular assist device;  LVAD
 assisted reproductive technology;  ART
 objective complement;  noun or adjective following and modifying the direct object
 compensating for one's shortcomings by incorporating others' strong points
 linear interpolation;  straight-line interpolation
 compensator;  compensating device
 health supplement;  dietary supplement
 subsidiary adjective (in Japanese);  auxiliary adjective
 brief (legal, patent, etc.)
 diminished radix complement;  radix-minus-one complement
 complementary metal-oxide semiconductor;  CMOS
 auxiliary inflecting word (in Japanese)
 following supplements;  supplementary information below
 workers' accident compensation insurance
 auxiliary inflecting word;  in Japanese, auxiliary verbs and adjectives
 complementary distribution
 supplementary symbol (number, punctuation, etc.)
 supplementary symbol (number, punctuation, etc.)
 expanded edition (of a dictionary)
 supplementation, causing bowel movements, heating, and cooling (four main treatments of traditional Chinese medicine)
 quit-smoking drug;  smoking-cessation aid;  stop-smoking medication
 (pharmaceutical) candidate compound
 special imperial appointment
 automated cargo spacecraft;  unmanned resupply spacecraft
 locking the barn door after the horse has bolted;  doing something too late; (lit.) mending the pen after the sheep are lost
 international auxiliary language
 Industrial Accident Compensation Insurance Act
 object complement;  objective complement
 classical form of i-adjective inflection formed by contraction of the "ku" adverbial form with the classical verb "ari" ("aru")
 fractional currency (e.g. cents, pence)