Synonyms for blow up

verb

1. To fill

   pump up, puff up, swell, inflate; see fill 1.

2. To explode

   erupt, rupture, burst, go off; see explode 1.

3. To destroy with explosives

   bomb, dynamite, detonate; see attack 1, bomb, destroy 1.

4. To magnify

   enlarge, enlarge on, exaggerate, overstate; see exaggerate, increase 1.

5. *To lose one's temper

   become angry or enraged, rave, lose self-control; see rage 1.