set off (something)

set off (something)
set off (something) 1. to cause an explosion.

The investigation determined that he probably did not set off the blast deliberately.

Apparently the bomb was placed in a locker and someone set it off with a cell phone.

2. to cause something to be noticed or make it more attractive.

You look terrific with those black slacks, and the bright blue blouse sets off your eyes.

3. to cause sudden activity.

Rumors set off a wave of selling on the stock exchange.

If you keep your phone in a pocket and lean up against something, you may accidentally set it off.


New idioms dictionary. 2014.

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  • set off — verb 1. put in motion or move to act (Freq. 4) trigger a reaction actuate the circuits • Syn: ↑trip, ↑actuate, ↑trigger, ↑activate, ↑spark off, ↑ …   Useful english dictionary

  • set|off — «SEHT F, OF», noun. 1. a thing used to set off or adorn; ornament; decoration. SYNONYM(S): trimming. 2. something that counterbalances or makes up for something else; compensation; offset. 3. a) …   Useful english dictionary

  • set off — 1) PHRASAL VERB When you set off, you start a journey. [V P prep/adv] Nichols set off for his remote farmhouse in Connecticut... [V P prep/adv] The President s envoy set off on another diplomatic trip... [V P] I set off, full of optimism. Syn:… …   English dictionary

  • set off — phrasal verb Word forms set off : present tense I/you/we/they set off he/she/it sets off present participle setting off past tense set off past participle set off 1) [intransitive] to start a journey, or to start going in a particular direction… …   English dictionary

  • set off against — phrasal verb [transitive] Word forms set off against : present tense I/you/we/they set off against he/she/it sets off against present participle setting off against past tense set off against 1) set something off against something same as set… …   English dictionary

  • set-off — Offset Off set , n. [Off + set. Cf. {Set off}.] In general, that which is set off, from, before, or against, something; as: [1913 Webster] 1. (Bot.) A short prostrate shoot, which takes root and produces a tuft of leaves, etc. See Illust. of… …   The Collaborative International Dictionary of English

  • slip off something — slip off (something) to remove clothing quickly and easily. Before I knew it he had slipped out of his shirt and put his arm around me. She slipped her gloves off and set them on the table …   New idioms dictionary

  • To set off — Set Set (s[e^]t), v. t. [imp. & p. p. {Set}; p. pr. & vb. n. {Setting}.] [OE. setten, AS. setton; akin to OS. settian, OFries. setta, D. zetten, OHG. sezzen, G. setzen, Icel. setja, Sw. s[ a]tta, Dan. s?tte, Goth. satjan; causative from the root… …   The Collaborative International Dictionary of English

  • To set off against — Set Set (s[e^]t), v. t. [imp. & p. p. {Set}; p. pr. & vb. n. {Setting}.] [OE. setten, AS. setton; akin to OS. settian, OFries. setta, D. zetten, OHG. sezzen, G. setzen, Icel. setja, Sw. s[ a]tta, Dan. s?tte, Goth. satjan; causative from the root… …   The Collaborative International Dictionary of English

  • set-off — /ˈsɛt ɒf/ (say set of) noun 1. anything that counterbalances or makes up for something else. 2. a counterbalancing debt or claim. 3. Architecture → offset (def. 16). 4. Printing a faulty transfer of superabundant or undried ink on a printed sheet …  

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