first place;  head position;  leading position
 employer's house;  master's house
 head (of a household);  proprietor (of a store);  one's husband;  (one's) employer;  (one's) master;  host
 primary cause;  main factor
 main;  principal;  chief;  primary;  major
 employer's house;  master's house
 chief;  main;  principal;  major
 person in charge;  senior staff;  manager;  chief;  head
 sovereignty;  supremacy;  dominion
 host and guest;  principal and auxiliary;  subject and object (philosophical);  subject and object
 the favor (favour) of one's master
 doctrine;  rule;  principle;  -ism
 main force;  chief object;  mainline
 independence;  autonomy;  self-reliance
 leading part;  leading actor;  leading actress
 ruler;  monarch;  sovereign
 democracy;  popular sovereignty;  Democratic Party (esp. DPJ)
 manager;  director;  superintendent;  overseer
 claim;  insistence;  assertion;  advocacy;  emphasis;  contention
 (present) head of a family
 shopkeeper;  storekeeper;  proprietor of a shop
 head;  chief;  boss;  leader
 housewife;  mistress (of the house);  homemaker
 household head;  master;  host (e.g. of a tea gathering);  husband
 main constituent;  core;  nucleus;  subject (philosophical);  protagonist
 head;  chief;  chairman;  governor;  top student;  head of the class
 subjectivity;  subject (philosophical);  ego;  one's personal opinion;  one's own idea
 mainly;  chiefly;  primarily;  for the most part
 main battery;  main armament
 master and servant;  lord and retainer;  employer and employee
 (the) mainstream;  main course (of a river);  main stream
 leader (of an alliance);  leading power
 owner of a hermitage;  abbess;  prioress;  nun in charge of a Buddhist convent
 founder of a religious sect
 principal offence;  principal offense;  principal offender
 head;  leader;  top; (arch.)  important part
 commander-in-chief;  supreme commander;  captain (of a team)
 main spindle;  main shaft;  linchpin;  pivot;  principal axis;  main axis
 main purpose;  primary objective
 main theater of war;  principal battlefield
 bishop (Orthodox, Anglican, etc.)
 main purpose;  chief aim;  focus;  main point;  gist;  essence
 main wings (of an aeroplane, airplane)
 main meaning;  opinion;  idea;  aim;  motive;  gist
 mostly involve;  principally involve
 ruler's orders;  master's orders
 host and guest;  principal and auxiliary;  subject and object (philosophical);  subject and object
 main bedroom;  master bedroom
 rancher;  cattleman;  person who owns or runs a ranch
 main ingredient;  main component
 main dish (e.g. meat, fish, but not rice);  principal dish
 people close to the head man
 the text;  the main clause;  the main part of a document
 chief editor;  managing editor;  manager;  person in charge
 storekeeper;  shopkeeper;  proprietor of a shop
 one's chief (literary) work;  main work
 central pillar;  principal post;  backbone of a society or community
 owner of a brothel or restaurant
 financial backer;  financial supporter
 one-man business;  sole proprietor;  sole proprietorship;  individual owner-manager
 secretary (lowest of the four administrative ranks of the ritsuryo system)
 supervision;  management;  supervisor;  manager
 principal raw material;  main raw material
 main city (of a district, province, etc.);  major city
 owner of a company;  head of a company
 farm owner;  plantation owner
 the Lord's name (esp. in Christianity)
 serving a master;  employee
 chairman of the Aikikai (Aikido World Headquarters)
 main ingredients;  chief materials
 keynote;  predominant element;  main point
 Democratic People's Republic of Korea (North Korea);  DPRK
 Liberal Democratic Party;  LDP;  Free Democratic Party (Germany);  FDP
 former master;  late master
 main part;  complete subject;  grammatical subject
 head priest of temple formerly led by founder of sect
 main memory;  main storage
 one's master's business;  necessary business;  major errands
 main memory;  primary storage
 principal agent (in a medicine)
 chief producing center;  chief producing centre
 main mountain range;  midrib;  costa;  main vein (leaf)
 chief abbot (of a Buddhist temple)
 direct examination;  examination-in-chief
 main sequence star;  main sequence stars
 performer of an action;  agent;  actor
 the Sabbath;  the Lord's Day
 principal agent (in a medicine)
 primary factor;  main cause
 subject (of a portrait or bust);  a person posing for a portrait or bust;  (historically) patron;  someone who commissions a Buddhist temple or work of art
 main storage;  main memory
 predominant color;  predominant colour
 main signal;  traffic signal
 doyen of the diplomatic corps
 essential elements of information
 main reinforcement (in a reinforced-concrete structure)
 principal diagonal;  main diagonal
 head priest (at a Buddhist temple)
 main bath (i.e. in a bathhouse)
 master;  main character;  protagonist