Open English Wordnet

(s)ageless, aeonian, eonian, eternal, everlasting, perpetual, unending, unceasingcontinuing forever or indefinitely“the ageless themes of love and revenge”, “eternal truths”, “life everlasting”, “hell's perpetual fires”, “the unending bliss of heaven”

(s)arrant, complete, consummate, double-dyed, everlasting, gross, perfect, pure, sodding, stark, staring, thorough, thoroughgoing, utter, unadulteratedwithout qualification; used informally as (often pejorative) intensifiers“an arrant fool”, “a complete coward”, “a consummate fool”, “a double-dyed villain”, “gross negligence”, “a perfect idiot”, “pure folly”, “what a sodding mess”, “stark staring mad”, “a thorough nuisance”, “a thoroughgoing villain”, “utter nonsense”, “the unadulterated truth”