stade / staid / stayed 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. 👇
stade: NA
staid: NA
stayed: (verb) stay the same; remain in a certain state. (verb) stay put (in a certain place). (verb) continue in a place, position, or situation. (verb) remain behind. (verb) stop or halt. (verb) stop a judicial process. (verb) fasten with stays.
stade: s·t·EY·d
staid: s·t·EY·d
stayed: s·t·EY·d
(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license. Definitions drawn from WordNet.)