- shred, scintilla, whit, iota, tittle, smidgen, smidgeon, smidgin, smidge - a tiny or scarcely detectable amount
--1 is a kind of small indefinite quantity, small indefinite amount
- iota - the 9th letter of the Greek alphabet
--2 is a kind of letter, letter of the alphabet, alphabetic character
--2 is a member of Greek alphabet