The definition of loiter is to hang around someplace without a reason to be there.
To move or act in a lazy, relaxed way; loll:
(Chiefly Brit., Informal) To act or talk foolishly
To spend time idly; loiter or lounge about; idle, dawdle, etc.
Find another word for mess-about. In this page you can discover 12 synonyms, antonyms, idiomatic expressions, and related words for mess-about, like: loiter, lounge, footle, lollygag, loaf, lallygag, hang around, tarry, linger, lurk and mill-about.