Terms for subject Idiomatic containing толком

Russian	English
без толку	in circles (Yeldar Azanbayev)
без толку сотрясать воздух	waste one's breath (igisheva)
взять в толк	get one's head round (melodict.com owant)
говорить без толку	waste one's breath (Yeldar Azanbayev)
давать толк	put to good effect (Баян)
давать толк	put to good use (чему-либо Баян)
дать толк	put to good use (чему-либо Баян)
дать толк	put to good effect (Баян)
за всё браться и ничего толком не уметь	jack of all trades and master of none (Yeldar Azanbayev)
знать толк	know the ropes (Andrey Truhachev)
знать толк в (чём-л.)	know one's onions (The expression "know one's onions" means to be very knowledgeable or experienced about something, to know a great deal about a particular subject. (Collins Dictionary) The origin is Cockney rhyming slang: onions = onions rings = things.: He knows his onions. -- Он знает / понимает толк в этих делах. ART Vancouver)
знать толк в	know how many beans make five (Yeldar Azanbayev)
много крику, мало толку	all bark and no bite (george serebryakov)
много шуму, мало толку	all sizzle and no steak (VLZ_58)
понимать толк	know the ropes (Andrey Truhachev)
понимать толк в чём-л.	know one's onions (The expression "know one's onions" means to be very knowledgeable or experienced about something, to know a great deal about a particular subject. (Collins Dictionary) The origin is Cockney rhyming slang: onions = onions rings = things.: He knows his onions. -- Он знает / понимает толк в этих делах. ART Vancouver)
прервать, не дав толком начаться	nip in the bud (also прервать в самом начале: "But his narrative was nipped in the bud. There was a bustle outside, and Mrs. Hudson opened the door to usher in two robust and official-looking individuals (...)" (Sir Arthur Conan Doyle) ART Vancouver)
прождать без толку	kick one's heels (kozelski)
сбивать с толку	throw a curve (The newspaper reporter threw the politician a curve – Репортер сбил политического деятеля с толку неожиданным вопросом VLZ_58)
сбивать с толку, используя специальную терминологию	blind with science (confuse someone by using technical language that they are not likely to understand: I think he decided to blind us with science because he didn't want us asking any difficult questions. lop20)
сбивать с толку, уводить по ложному следу	strew red herrings (wikipedia.org Asker)
сбитый с толку	at sea (denghu)
толку как от козла молока	fat lot of good (SirReal)
толку как от козла молока	as good as a chocolate teapot (It's as good as a chocolate teapot – От этого толку как от козла молока Taras)
толку как от козла молока	fat lot of use (SirReal)
толку как с козла молока	as useless as teats on a bull (Lana Falcon)
что толку конюшню запирать, когда коня украли	lock the stable door after the horse is stolen (kee46)
я сбит с толку	in sixes and sevens (Yeldar Azanbayev)
я сбит с толку	in sixes'n'sevens (Yeldar Azanbayev)