без сучка без задоринки

без сучка без задоринки  {adv. phr.}

`bez such'`ka bez za`dorinki

Sth. that went off impeccably, smoothly, without any problems.

To do sth. without defects.

Тестирование продукта прошло без сучка без задоринки. — Product testing has been carried out (passed) without any problems (smoothly).

 {Origin}

From the carpenters' and cabinetmakers' style of speaking. Initially, about the wood and timber of a high quality and thorough woodworking. Задоринка — roughness, a hook on the surface of a smoothly planed board. Literally — without any defects.

See also:

комар носа не подточит; без изъянов

it's just perfect; it's done to a T; there's nothing left hanging