Answer: secondnature

AnswerCrossword Clue
SECONDNATUREDeeply ingrained habit
SECONDNATURECharacteristic tendency
SECONDNATUREHabitual
SECONDNATUREIngrained habits.
SECONDNATUREAcquired habit.
SECONDNATURERut of a sort
SECONDNATURESomething deeply engrained
SECONDNATURERiding a bike, e.g., for most
SECONDNATURESwimming or riding a bike, for most people