sleep tight

Tucking-in farewell

Sleep tight is an affectionate way to wish someone a good night's rest, suggesting they sleep soundly and securely: Good night, sleep tight.

The phrase often appears with children at bedtime, sometimes followed by the rhyme don't let the bedbugs bite.

Tight here carries an older sense of soundly or securely.

Opposites
time of greeting

sleep tightgood morning

Daytime greeting phrase

rise and shine · wakey wakey · wake up · up and at 'em · top of the morning

wish quality

sleep tighttoss and turn

Move restlessly in bed

restless night · sleepless night · insomnia · nightmare · fitful sleep

Family

sleep, tight, sleepy, sleeping, slept, sleeper, sleepless, sleepwalking, sleepwalker

Familiarity
Top 20,000
Profile
Known to kids · Used worldwide · Timeless · Positive · Everyday, not technical · Rated G