(intransitive) To leave secretively.

(idiomatic) To look quickly at someone or something, hoping that nobody notices the action.

(intransitive, idiomatic) To gain an advantage unobserved. / (intransitive, idiomatic) To start early.

(baseball) A situation in which two baserunners attempt to steal a base simultaneously. This is usually called by the manager when there are runners on first base and second base.

(idiomatic, intransitive, entertainment) To be the best performer during a performance.

present participle of kill steal

(online gaming, derogatory) In a multiplayer online game, to deal a finishing blow on an enemy that other player(s) had almost killed, without their consent, so that one gets the credit or rewards instead of them.

(online gaming, derogatory) A finishing blow of this kind.

(baseball) Thrown out (i.e. put out) while attempting to steal a base. / Used other than figuratively or idiomatically: see caught, stealing.

To dominate a performance through charisma, humour or powerful acting