colour up - definition and synonyms

phrasal verb [intransitive]
present tense
I/you/we/theycolour up
he/she/itcolours up
present participlecolouring up
past tensecoloured up
past participlecoloured up
  1. if you colour up, your face becomes red

    He kissed Mary on the cheek, and she coloured up instantly.

See also main entry: colour