smileful adjective 1noun 1forms 4 adjective1 •Full of smiles. noun1 •A quantity revealed by a smile....it seems to make sense, yet it is all dimly disturbing and oddly unsatisfying, a great confusing wad of misdirection oozing out of a smileful of charm. — 2001 formssmilefuls · smilesful · more smileful · most smileful