思い当たる

おもいあたる

to suddenly understand (esp. on basis of experience or memory); to come to mind; to recall (in a flash); to be reminded of

Common word Also written 思いあたる、思い当る

Meanings

Godan verb (-ru), Intransitive
to suddenly understand (esp. on basis of experience or memory); to come to mind; to recall (in a flash); to be reminded of; to call to mind; to think of; to strike on; to hit on an answer; to seize the crux of a problem

思おもい当あたる節ふしはない。

That doesn't ring a bell.
思おもいあたらないのですが。

I don't recall.
夏休なつやすみも近ちかいけど、どこかいいところ思おもい当あたりますか。

Summer vacation is near. Can you think of a good place for the holidays?