frost over - definition and synonyms

phrasal verb [intransitive/transitive]
present tense
I/you/we/theyfrost over
he/she/itfrosts over
present participlefrosting over
past tensefrosted over
past participlefrosted over

or frost up

  1. to cover something completely with frost, or to become completely covered with frost

    The windows were all frosted over.

See also main entry: frost