JMdict: 1309350

思いあたる 【おもいあたる】

  1. [v5r,vi] 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
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Think おも.う, おもえら.く, おぼ.す

Words often seen with this one: (experimental feature)

こと (20), 何か (10)