verbs
remain present although waning or gradually dying
"Her perfume lingered on"
is a type of (narrower)
stay behind
"The smell stayed in the room"; "The hostility remained long after they made up"
be about
"The high school students like to loiter in the Central Square"; "Who is this man that is hanging around the department?"
footle,
hang around,
lallygag,
linger,
loaf,
loiter,
lollygag,
lounge,
lurk,
mess about,
mill about,
mill around,
tarry
leave slowly and hesitantly
take one's time; proceed slowly
move to and fro
"The shy student lingered in the corner"