Answer: quirk

AnswerCrossword Clue
QUIRK

Idiosyncrasy

QUIRK

Mannerism

QUIRK

Eccentricity

QUIRK
Peculiarity
QUIRK
Odd mannerism
QUIRKPeculiar trait
QUIRKPeculiar mannerism
QUIRKVagary
QUIRKMannerism.
QUIRKEccentricity.
QUIRKPeculiarity.
QUIRKOddity
QUIRKOdd behavior