1 Sometimes, linger on. stay (behind), remain, tarry, loiter, persist, hang on, endure, persevere, survive, Colloq hang or stick about or around:
The smell of tobacco lingered for hours after he had gone. He lingered on for a day, then died from his wounds
2 pause, dawdle, dally, lag, idle:
She lingered for a moment at the jeweller's window.
3 Often, linger on or over. dwell on, elaborate, harp on, labour:
I shall not linger over the details of the crime.
4 procrastinate, dither, shilly-shally, temporize:
You must stop lingering and decide today.