all ready / already are similar-sounding terms with different meanings (referred to as homophones). To better understand the differences, see below for definitions, pronunciation guides, and example sentences using each term. 👇
all ready: NA
already: (adverb) prior to a specified or implied time.
all ready: NA
already: ao·l·r·EH·d·iy
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)