大先輩: veteran, someone who is one's senior by a significant degree

before, previous / end, tip / earlier, the past / afterwards, the future / the destination of a motion or action / sequel / ahead, in front

previous / former / prior

previously, before

what lies ahead

before, previous

conjecture about a presently occurring situation that the speaker has no direct knowledge about

The hiragana syllable む (mu). Its equivalent in katakana is ム (mu). It is the thirty-third syllable in the gojūon order; its position is ま行う段 (ma-gyō u-dan, “row ma, section u”).

Used to indicate a mumbling sound.

(Classical Japanese, after mizenkei) Used to form the volitional form of verbs, equivalent to modern う (-u > -ō) / よう (-yō).