一つ事

ひとつこと ひとつごと

the same thing

二つ返事

ふたつへんじ

immediate reply, quick answer, ready agreement

返事

へんじ

reply, answer, response

空返事

そらへんじ からへんじ

absentminded response

生返事

なまへんじ

half-hearted reply, vague answer, reluctant answer

即返事

そくへんじ

prompt reply

お返事

おへんじ

reply; answer; response

一事

いちじ

one thing

一つ一つ

ひとつひとつ

one-by-one, separately, in detail

一大事

いちだいじ

serious affair

一仕事

ひとしごと いちしごと

task, (doing a) bit of work

一事が万事

いちじがばんじ

a single instance indicates what happens all the time, one case gives you an idea of what always happens

一石返し

いっせきがえし

reversing a single stone (othello)

一つ

ひとつ

one

家事一切

かじいっさい

all the domestic (housekeeping) chores

世事一切

せじいっさい

all the worldly matters

仕事一筋

しごとひとすじ

living only for one's work, a life with no other interest than one's work

一朝有事

いっちょうゆうじ

(when) the time of need arises, should an emergency occur

仕事一途

しごといちず

singlemindedly devoted to work