fold up verb 4fold-up adjective 1fold-up noun 1forms 4 verb4 •To make or become more compact by folding.Please fold up these towels so they will fit on the shelf. •To go out of business; to stop doing something.That place folded up years ago. •(slang) To surrender, abandon or give up under pressure.It used to be said there were two kinds of chairs to go with two kinds of Ministers: one sort that folds up [pun] instantly, the other sort goes round and round in circles (laugh track). — 1980 •To move on, as in a traveling circus taking down its tents and attractions and moving to a new location.They will fold up on Sunday and be gone from here.The circus folded up its tent and headed north. fold-up adjective1 •Able to be folded up; especially, easy to fold up. fold-up noun1 •A piece of furniture that is easily folded up for storage or transport. formsfolded up · folding up · folds up · fold-ups