[mai] (aux) (1) probably isn't (doesn't, won't, etc.); (2) don't (doesn't) intend to; intend not to; (3) must not; (when used in an imperative sentence) don't #4213
[おそらく, osoraku] (adv) perhaps; likely; probably; I dare say; (P) #10550
[たぶん, tabun] (adv, n) (1) perhaps; probably; (adj-na, adj-no) (2) generous; many; much; great; (P) #11691
[たいてい, taitei] (adj-na, adv, n) (1) (uk) mostly; ordinarily; usually; generally; (2) probably; (adj-no, n) (3) most; almost all; (4) (before a neg. form) ordinary; (adj-na) (5) (usu. as 〜にする) proper; appropriate; moderate; (P) #13288
[shinainodehanaika (P); nainodehanaika] (exp) I think (something) won't (something); probably (something) isn't (something); (P)
[dearou] (aux) will; probably; may; I think; surely; I hope; I fear; it seems
[nakarou] (exp) (See 無い・1) probably not so
[mashou ; masho (ik); mahyo (ik)] (exp) (1) (pol) (ましょ is a colloquialism in standard Japanese; まひょ is a colloquialism in Kansai dialect) (See ます) (used to express the speaker's volition) I'll; (2) (used to make an invitation, request, etc.) let's; (3) (See でしょう) (used to express a conjecture) probably
[mu] (int) (1) (arch) unh (sound of physical exertion); oof; (2) wow; whoa; (3) (See うむ) yes; yeah; uh-huh; (aux-v) (4) (after a -nai stem) probably; (5) will; intend to; (6) would like to have done (for me)
[nzu ; muzu ; uzu] (aux-v) (1) (arch) (See んとする) will probably be; (2) intending to; will; (3) should
[けだし, kedashi] (adv) perhaps; probably
[たしかそうだ, tashikasouda] (exp) that's probably so
[くうぜんぜつご, kuuzenzetsugo] (n, adj-no) (so marvelous or horrible that it may be) the first and probably the last
[さもあらん, samoaran] (exp) (See さもありなん) it's probably so; it stands to reason
[さもありなん, samoarinan] (exp) it's probably so; it stands to reason
[いれかえせん, irekaesen] (n) match-up between sumo wrestlers from different divisions who will probably 'switch' divisions in new ranking