Blow-up Definition

blowup, blowups
verb

(intransitive) To explode or be destroyed by explosion.

Why do cars in movies always blow up when they fall off a cliff?
Wiktionary

To cause (something or someone) to explode, or to destroy (something) or maim or kill (someone) by means of an explosion.

We had to blow up the bridge before the enemy army arrived.
More civilians than soldiers have been blown up by anti-personnel mines.
Wiktionary

To inflate or fill with air.

Blow up the balloons.
Wiktionary

To enlarge or zoom in.

Blow up the picture to get a better look at their faces.
Wiktionary
(intransitive) To fail disastrously.
Wiktionary
Synonyms:
adjective

Inflatable; able to be blown up.

The kids played with a blow-up sea-monster in the pool.
Wiktionary
noun

An explosion (physical or emotional).

I heard Jen's blow-up from the next room.
Wiktionary

An enlargement (e.g. of a photo).

Make a blow-up of the chart so we have more room to draw on it.
Wiktionary

Other Word Forms of Blow-up

Noun

Singular:
blow-up
Plural:
blow-ups

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