deedEnglishOxford American Thesaurusdeed noun 1 tales of knightly deeds: act, action, activity; feat, exploit, performance, achievement, accomplishment, attainment, endeavor, effort; undertaking, enterprise. 2 working-class unity must be established in deed and not only in words: fact, reality, truth, actuality. 3 mortgage deeds: legal document, contract, legal agreement, indenture, instrument; title deed, deed of covenant.