waiting up

Not sleeping yet

Waiting up is staying awake past one's usual bedtime to await someone's arrival or news: I'll be waiting up for you.

Parents wait up for teenagers coming home late.

The phrase implies concern or anticipation—you wouldn't wait up for a stranger.

Don't wait up tells someone not to delay sleep on your account.

anticipation

awaiting

Staying until something arrives

excitement · countdown · readiness · vigil · longing · expecting · homecoming · return · arrival · reunion

vigilance

watchfulness

Careful, sustained attention

watching · guarding · protective · sentry · lookout · monitoring · keeping watch · ears open · light on · window

worry

fretting

Anxious rumination or surface wear

concern · unease · restlessness · dread · fear · uncertainty · agitation · distress · overthinking · pacing

wakefulness

sleeplessness

Inability to rest

exhaustion · drowsiness · bleary-eyed · weary · sleepy · awake · alert · coffee · caffeine · heavy eyelids

nighttime

midnight

Twelve o'clock at night

silence · stillness · moonlight · nightfall · small hours · lamplight · porch light · shadows · hush · empty streets

Opposites
sleep timing/choice

waiting upgoing to bed

Preparing for sleep

turning in · going to sleep · hitting the sack · hitting the hay · early to bed

vigilance/concern

waiting upletting go

Releasing one's grasp

disengaging · ignoring · oblivious · detaching

Family

wait, waiting, waits, waited, waiter, waiters, waitress, waitresses

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Everyday, not technical · Rated G