[desu] (aux) (pol) (See だ・1) polite copula in Japanese; (P) #34
[da] (aux) (1) (See です) plain copula; (aux-v) (2) (た after certain verb forms) (See た・1) indicates past or completed action; (3) (See た・2) indicates light imperative; (P) #79
[nara (P); naraba (P)] (aux) (1) (hypothetical form of the copula だ, from なり and sometimes classed as a particle) if; in case; if it is the case that; if it is true that; (2) (なら only) as for; on the topic of; (conj) (3) (col) (abbr) (See それなら) if that's the case; if so; that being the case; (4) (ならば only) if possible; if circumstances allow; (P) #141
[がったい, gattai] (n, vs) (1) union; coalescence; amalgamation; combination; alliance; annexation; incorporation; (2) copulation; penetration #5875
[そろ;そう;さう;す, soro ; sou ; sau ; su] (aux) (arch) (pol) (See 候ふ) to be (auxiliary used in place of "aru" after "de" or "ni" when forming a copula); to do (auxiliary used in place of "-masu" after a -masu stem) #7743
[ojaru] (v4r) (1) (arch) (hon) (See いらっしゃる) to come; to go; to be; (aux-v) (2) (See であります) (usu. after the particle 'de') forms a polite copula
[dearimasu] (exp) (pol) (See である) to be (copula)
[degonsu] (exp) (arch) (pol) (See でございます) to be (copula)
[でございます, degozaimasu] (exp) (uk) (pol) (See である) to be (copula)
[でござります, degozarimasu] (exp) (arch) (pol) (See で御座います) to be (copula)
[nano] (aux) (fem) (col) feminine copula
[kopura ; kopyura] (n) (1) (コプラ only) copra; (2) { ling } copula
[けいじ, keiji] (n) { ling } copula
[まじわる, majiwaru] (v5r, vi) (1) to cross; to intersect; to join; to meet; (2) to associate with; to mingle with; to consort with; (3) to have a sexual relationship; to copulate; (P)
[こうび, koubi] (n, vs, adj-no) copulation (in animals)
[つるむ, tsurumu] (v5m, vi) to copulate (animals); to mate
[そうろう;そうらう(ok), sourou ; sourau (ok)] (v4h, vi) (1) (候ふ only) (arch) to serve (by a superior's side); (aux-v, v4h) (2) (pol) to be (auxiliary used in place of "aru" after "de" or "ni" when forming a copula); to do (auxiliary used in place of "-masu" after a -masu stem)
[していし, shiteishi] (n) { ling } copula
[じょうが, jouga] (n) mounting (during animal copulation)
[もる, moru] (v5r, vi) (1) to prosper; to flourish; (2) to copulate (animals)
[あらせられる, araserareru] (v1, vi) (1) (uk) (hon) (See 在る・ある・1, 居る・いる・1, 居る・おる・1) to be; to exist; (2) (uk) (hon) (as であらせられる) (See である) to be (honorific copula)
[れんけつし, renketsushi] (n) { ling } copula; connective