steam up

MIST (UP/OVER), fog (up), become misty/misted.

→ steam

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verb

Etymology: steam (II) + up, adverb

transitive verb

1. : to cover with steam or vapor

his breath steamed up the window pane

2. : to supply with energy : give impetus to

a drive for bigger government spendings to steam up the economy — Kiplinger Washington Letter

3. : to make angry or excited : arouse

the injustice of the charges steamed him up

will find the neighbors much more steamed up over economic issues — Time

4. Britain : to feed (a female domestic animal) heavily especially before parturition in order to induce a heavy milk flow

intransitive verb

: to become covered with steam

his glasses steamed up as he came into the warm room

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steam up

(of windows, etc) to become or cause to become dimmed with condensed vapour

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Main Entry: ↑steam

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ˌsteam ˈup [intransitive/transitive] [present tense I/you/we/they steam up he/she/it steams up present participle steaming up past tense steamed up past participle steamed up] phrasal verb

to cover something with steam, or to become covered with steam

My glasses kept steaming up.

Thesaurus: to cover something with a specific substance_synonym

Main entry: steam

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ˌsteam ˈup | ˌsteam sthˈup derived

to become, or to make sth become, covered with steam

•

As he walked in, his glasses steamed up.

Main entry: ↑steam_derived