by chance

Prepositional phrase

Unexpectedly, accidentally; without foreplanning. / Possibly; perhaps.

Japanese Meaning

偶然に / たまたま / もしかすると

I met my old teacher by chance at the coffee shop yesterday.

私は昨日、カフェで偶然、昔の先生に会いました。

Sense（1）

Unexpectedly, accidentally; without foreplanning.

I stumbled across the exit by chance.

Sense（2）

Possibly; perhaps.

Are you by chance looking for the exit?