お変わりありませんか

おかわりありませんか

how have (you) been? (gen. used after some time apart), nothing (untoward) has happened, has it?

ませなんだ

ましなんだ ませんかった ませんだった

suffix used to negate a verb in the past tense

ません

suffix used to negate a verb in the non-past tense

構いません

かまいません

no problem, it doesn't matter

任せ

まかせ

leaving everything up to someone else

運任せ

うんまかせ

trusting or resignation to fate

慢性化

まんせいか

becoming chronic

他人任せ

たにんまかせ ひとまかせ

leaving (it) to others

慢性関節リウマチ

まんせいかんせつリウマチ まんせいかんせつリューマチ

chronic rheumatoid arthritis

開幕戦

かいまくせん

opening game, (season) opener

噛ませる

かませる

to force something into someone's mouth (i.e. a gag)

気任せ

きまかせ

doing as one pleases, following one's nose

任せる

まかせる

to entrust (e.g. a task) to another, to leave to

出任せ

でまかせ

random speech

お任せ

おまかせ

leaving a decision to someone else (often of a meal to be selected by the chef)

埋線

まいせん うません

underground cable

飛沫感染

ひまつかんせん

droplet infection

間接自慢

かんせつじまん

indirect bragging (esp. on social media; by casually showing off something bragworthy as if it were unintended)

飛沫核感染

ひまつかくかんせん

droplet nuclei infection