ef·fort·less 
(ĕfərt-lĭs)
(ĕfərt-lĭs)adj.
Calling for, requiring, or showing little or no effort. See Synonyms at easy.
effort·less·ly adv.
effort·less·ness n.
- unanswerable
- unanswerableness
- unanswerably
- unanticipated
- unanticipatedly
- unapologetic
- unapologetically
- unappealable
- unappealably
- unappealing
- unappealingly
- unappeasable
- unappeasably
- unappetizing
- unappetizingly
- unappreciated
- unappreciative
- unappreciatively
- unapproachability
- unapproachable
- unapproachableness
- unapproachably
- unappropriated
- unapproved
- unapt