plural of set-off

(idiomatic, intransitive) To leave; to begin a journey or trip. / (idiomatic, transitive) To begin; to cause; to initiate. / (idiomatic, transitive) To cause to explode, let off.

Third-person singular simple present indicative form of set off

present participle of set off

That which is set off against another thing; an offset. / (dated) That which is used to improve the appearance of anything; a decoration; an ornament.