1. Literally, a sudden starting or change of place. Hence,
2. A sudden causeless change or turn of the mind; a whim or fancy; a capricious prank.
She is restless and peevish, and sometimes in a freak will instantly change her habitation.
FREAK, verb transitive [Heb. to divide.]
To variegate; to checker.
FREAKed with many a mingled hue.