Synonyms for sleepless

Most common

awake · watchful · insomniac · wakeful · restless · lidless · insomnious

All synonyms

Adjective

Antonyms

wakeless

All antonyms of sleepless →

Definitions

1. adj. 1

   Characterized by an absence of sleep: wakeful.

   I spent a sleepless night worrying about the exams.

Example sentences

• awake Tom lay awake for a long time thinking about Mary.
• watchful Not a single mistake escaped his watchful gaze.
• insomniac The insomniac always bows to the absence of sleep.
• wakeful I was sleepy before you came. I am quite wakeful now.
• restless The longer we stayed, the more restless we became.

Popularity over time

Use in printed books, per decade from 1850 to 2019.

By length

5 letters

alert², awake²

7 letters

wakeful, lidless

8 letters

restless², vigilant³, watchful²

9 letters

insomniac⁴

10 letters

insomnious

The small number after each word is its number of syllables (alert² = 2 syllables).