Dictionary

1. (

• insomniac ,
• sleepless ,
• watchful

) experiencing or accompanied by sleeplessness; "insomniac old people"; "insomniac nights"; "lay sleepless all night"; "twenty watchful, weary, tedious nights"- Shakespeare ;

2. (

• lidless ,
• sleepless

) always watchful; "to an eye like mine, a lidless watcher of the public weal"- Alfred Tennyson ;