acquainted, acted, able-bodied, added, addled, addle-headed, aforementioned, aggravated, aggrieved, allied, amended, annotated, appointed, arrested, arraigned, assigned, attenuated, attended, automated
Edifice
The paste tense / adjective form is spelled trapped.
five-footed animal is an adjective ending in -ed.
ed ed and Eddie
The answer is deny. The question says that the word starts with 'ed' but the order is not mentioned. So this answer is surely applicable.
founded
if by "cation" you mean action, then ate is an action verb that doesn't end in ed. so, no they don't all end in ed
edicts
Participle?
The past tense (or adjective) is spelled tripped.
Shown is an irregular verb because shown is different to ending in -ed. Does shown end in -ed? No it doesn't end in -ed so which makes it an irregular verb.
Ed before a word that starts with a vowel in Italian means "and" in English.