Smileful is valid Scrabble Word

Is smileful a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List NO
Collins Scrabble Words YES
Is smileful valid Words with Friends?
Words with Friends NO

Definitions for SMILEFUL in dictionary:

Similar words containing SMILE without suffix ful

smile7 smiled9 smiler8 smiles8 smilet8 smiley11 besmile11 smilers9 smilets9 smileys12 besmiled13 besmiles12 outsmile10 outsmiled12 outsmiles11 smileless11
Find what other words can be done using letters: "smileful"
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