She crooled a lullaby to the fussy kitten until it fell asleep.

The old parrot sat on the windowsill, crooling a tune that sounded half-forgotten.

Don't crool the characters in your story just to shock readers; give them believable motives.

During long sermons he would crool into his sleeve, unheard by the others.

The crool landlord raised the rent without warning.

When confronted with weakness, he crools without a second thought.