(idiomatic) To perceive things as different, or to perceive their difference itself; to differentiate, distinguish, discriminate.

(idiomatic) An attestation to the truthfulness and frankness of an associated statement.

Used other than figuratively or idiomatically: see tell, truth.

(idiomatic, informal) Used to positively assert the frank honesty of an associated statement of set of statements; equivalent to "to tell the truth".

(idiomatic) To lie, to be making false claims.

plural of tell tale

A school activity in which each student brings an item to school and gives a talk on it to the class.

An instance of telling someone off, a reprimand or scolding.

plural of telling-off

(idiomatic) Events and outcomes cannot be known beforehand.