(idiomatic) A thing or person which fails to measure up to its description or advanced promotion.

(US, proscribed, nonstandard) Eggcorn of for all intents and purposes.

(dated) rubbish, humbug

(idiomatic) Full of big talk but lacking action, power, or substance; pretentious. / (idiomatic) Often making cutting remarks, but having a gentle personality underneath.

(idiomatic, vulgar, emphatic) fuck all

(idiomatic, vulgar, emphatic) fuck all

(idiomatic, law) The copyright holder of a creative work reserves all copyright-related rights, typically including the right to publish the work, to make derivative works of it, to distribute it, to make profit from it, to license a number of these rights to other people, and to forbid these uses by any unauthorized people, thus being entitled to take legal action against infringement.

(idiomatic) Very attentive.

(US) For every functional purpose; in every practical sense; in every important respect

Eggcorn of for all intents and purposes.