FIDDLE WITH

1) Don't fiddle with the engine if you don't know what's you're doing — Хватит копаться в двигателе, если ты в нем не разбираешься He sat there nervously fiddling with his tie — Он сидел и нервно теребил свой галстук Who's been fiddling with my papers? — Кто рылся в моих бумагах? 2) Someone has been fiddling with the accounts, there's some money missing — Кто-то подделал счета, и денег не хватает