high time

noun

1. the appropriate time or past the appropriate time.

   It's high time he got out of bed.

high time

adverb

1. the latest possible time; a time that is almost too late

   it's high time you mended this shelf

noun

1. Also called: high old time. an enjoyable and exciting time

Idioms and Phrases

The appropriate time for something; also, past the appropriate time. For example, It's high time we did something about Martha's dog, or It's high time you children were in bed. The precise meaning of this term depends on the tone of voice and/or the context. For a synonym, see about time.