Why you used it in such a context as you did is beyond me and the cause for the "Um...never mind." ...it wasn't important enough for further ponderance.
next time try the thesaurus
Entry: graceless
Function: adjective
Definition: clumsy
Synonyms: awkward, barbarian, barbaric, barbarous, boorish, clunky, coarse, corrupt, crude, forced, gauche, gawky, ill-mannered, improper, indecorous, inelegant, inept, infelicitous, klutzy, loutish, outlandish, rough, rude, shameless, tasteless, uncouth, unfortunate, ungainly, unhappy, unmannered, unmannerly, unsophisticated, vulgar,