IOTA Scrabble 4 Words With Friends 4 Definition noun a tiny or scarcely detectable amount. — synonyms: shred, scintilla, whit, tittle, smidgen, smidgeon, smidgin, smidge noun the 9th letter of the Greek alphabet. See all 10 words you can make from IOTA → 4-letter words Words starting with I Words ending with A ← Unscramble different letters