(idiomatic) Entirely, to all appearances.

Alternative form of all-fired

As an absolute imperative; sparing no effort or expense

(literally) According to all available accounts or reports. / (idiomatic) According to everything that people have said.

(slang, vulgar) Nothing at all, or very little.

A matter of indifference; a matter having no importance or consequence.

(colloquial) Used before a plural noun to form a compound noun having the sense of: the greatest or largest of (its kind); the most epic example of (its kind).

(colloquial, obsolete) True; agreed, yes indeed. / (of accounts, amounts, or calculations) Accurate, tallied correctly. / (of documents, especially legal documents) Accurate and appropriate.

(chiefly Southern US, colloquial) Possessive of all y'all (standing in for all your).

(chiefly Southern US, redundant, pleonasm) Plural form of you.