noun:

• killing two birds with one stone; serving two ends - four character idiom

expression / ichidan verb:

• to build up one's strength; to get stronger
• to give (someone) strength; to cheer (someone) up; to encourage (someone)

noun:

• one koku (measure)

expression:

• taking pride in one's humility is a form of bragging; he that humbleth himself wishes to be exalted; too much humility is pride - proverb

noun:

• one's humble opinion

suffix:

• unless one ...; if one does not ... - colloquialism ➜ 無ければ
• cannot do without something - colloquialism - abbreviation ➜ 無くてはいけない【なくてはいけない】
• have to do - after negative base of verb ➜ 無くてはいけない【なくてはいけない】

expression / ichidan verb:

• to put one's palms together (e.g. when praying or asking for something); to place one's hands together
• to compete against somebody; to play (a game, match, etc.) against somebody - idiom

noun:

• broadcasting more than one video stream through one television channel

godan ~く verb / intransitive verb:

• to be at one's wit's end; to be in great trouble; to be at a loss

noun:

• one's class (and legal domicile)

expression / godan ~む verb:

• to make a dent in one's purse; to have to pay out of one's own pocket

noun:

• one's employer's house; one's employer; place of apprenticeship

expression / godan ~す verb:

• to make a sound with one's throat; to purr (cat)

expression / ~する verb (irregular):

• to do as one wishes; to get one's way - archaism
• to be proud; to boast - archaism

noun:

• lifting one's buttocks (e.g. through exercise); getting a perkier bum; getting rid of sagging buttocks - From English "hip up"

noun:

• living only for one's work; a life with no other interest than one's work - four character idiom

noun:

• series of holidays with one or two workdays in between - four character idiom

noun:

• the chosen one; the chosen ones; the select few

expression / adjective:

• preventing one's opponent from getting an underarm grip - Sumo term
• having weak defenses

noun:

• decorative gauze strap that hangs from the front left side of the kohimo when tying closed one's hanpi ➜ 小紐

adverb:

• extremely cold feeling that makes one feel numb; sharp pain that is almost numbing - onomatopoeia
• heartrending; touching the heart

adverb:

• one by one; one at a time; in turn

noun / adverb:

• all on one's own ➜ 一人っきり

adjectival noun / adverb / noun:

• with all one's might

expression / adjective:

• not in one's right mind; insane