Denshi Jisho — Online Japanese dictionary

主 す honorific (or familiar) suffix used after a name
Suffix, Archaism, Honorific or respectful language 
主 おも 1: chief; main; principal; important;
2: (Abbreviation) main secondary or supporting role (in kyogen)
Common word, Na-adjective, Noun 
主 しゅ 1: (one's) master;
2: Lord (Christian ref. to Jesus or God);
3: the main thing; the majority; the primary concern
Common word, Noun, No-adjective 
主 ぬし 1: head (of a household, etc.); leader; master;
2: owner; proprietor; proprietress;
3: subject (of a rumour, etc.); doer (of a deed);
4: guardian spirit (e.g. long-resident beast, usu. with mystical powers); long-time resident (or employee, etc.);
5: husband;
6: (Pronoun) (Familiar language) you
Common word, Noun 
主 にし you
Pronoun, Archaism, Familiar language 
主 のし you
Pronoun, Archaism, Familiar language 
主 あるじ 1: (Abbreviation) head (of a household); proprietor (of a store); proprietress; landlord; landlady; master (of a servant);
2: (Archaism) entertaining someone as one's guest
Noun 
主 しゅう (one's) master
Out-dated or obsolete kana, Noun, No-adjective 
主に おもに mainly; primarily
Common word, Adverb 
主義 しゅぎ doctrine; rule; principle
Common word, Noun 
主語 しゅご subject
Common word, Noun, No-adjective, Linguistic term 
主査 しゅさ chief examiner or investigator
Common word, Noun, Suru verb 
主婦 しゅふ housewife; mistress (of the house); homemaker
Common word, Noun 
主人 あるじ 1: (Abbreviation) head (of a household); proprietor (of a store); proprietress; landlord; landlady; master (of a servant);
2: (Archaism) entertaining someone as one's guest
Noun 
主な おもな chief; main; principal; important
Pre-noun adjectival 
主根 おもね main root; taproot
Noun 
主家 おもや 1: main building (of a manor);
2: central room (of a house)
Noun 
主屋 おもや 1: main building (of a manor);
2: central room (of a house)
Noun 
主典 さかん (Archaism) secretary (lowest of the four administrative ranks of the ritsuryo period)
Noun 
主位 しゅい first place; head position; leading position
Noun, No-adjective 
主意 しゅい main meaning; opinion; idea; aim; motive; gist; meaning
Noun 
主家 しゅか employer's house; master's house
Noun 
主我 しゅが ego; self
Noun 
主家 しゅけ employer's house; master's house
Noun 
主旨 しゅし meaning; point (e.g. of a statement); gist; effect
Noun 
主事 しゅじ manager; director; superintendent; overseer
Noun 

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