Phrases. to go aboveor beyond one's latchet: to meddle with what does not concern one. (Cf. last, n.1 2c) a lie with a latchet: a great lie.

An arrant lie; a downright falsehood. Cf. rap, v.2 8b. Now historical and archaic.

He who or that which bangs; slang, an astounding lie, a ‘thumper’.

Anything ‘thumping’ or strikingly big of its kind, esp. a ‘thumping’ lie; a ‘whopper’, ‘whacker’: cf. bouncer, n. 3 4 colloquial.

slang or colloquial. Something great or excessive, a ‘whopper’ (cf. whisking, adj. 2); esp. a great lie, a ‘bang’. Now rare or Obsolete.

spec. A great or bold lie, a ‘bang’. Obsolete.

A thumper, a whacker; in quot. 1674, a ‘thumping’ lie. Obsolete. rare.

transferred. A monstrous lie, ‘whopper’. Obsolete.

A deliberate lie. Obsolete.

slang. (See quot. 1699.) Obsolete.

Something very big; a ‘whopper’; spec. a ‘thumping’ lie. slang or dialect.

An outrageous lie; a ‘whopper’. Cf. rousing, adj. 2c. Obsolete.

A downright lie. In later use more generally: an unusually large example of its type. Cf. whopper, n. 1b. Obsolete.

spec. A great lie, a monstrous falsehood.

A ‘bouncing’ or ‘thumping’ lie.

Scottish. = yank, n.1 1; figurative a big or ‘thumping’ lie.

British regional. An outright lie. Cf. rapper, n. 1a. Now rare.

Anything abnormally large of its kind; esp. a ‘thumping’ lie; a ‘whopper’.

(a) ‘An assertion or statement, the falsity of which is plainly apparent’ (Welsh). (b) A platitude that has not even the merit of being true.

A ‘whopper’, ‘whacker’, ‘thumper’; also a ‘thumping’ lie, a ‘cracker’.

colloquial. A ‘thumping’ lie, a banger; bang-words: explosive epithets, ‘swear’ words.

A blatant or outright lie. Obsolete.

(frequently with capital initials) (with the) a falsehood contrived on such a large scale that its magnitude and definiteness discourage dissent…