iota

/aɪˈoʊdə/

/aɪˈʌʊtə/

Other forms: iotas

If you don't care one iota about something, it means you don’t care about it even one little bit. An iota is something very small.

An iota is the smallest letter of the Greek alphabet. The expression "not one iota" comes from the Bible (Matthew 5:18): "For truly, I say to you, until heaven and earth pass away, not an iota, not a dot, will pass from the Law until all is accomplished."

Definitions of iota

1. noun

   a tiny or scarcely detectable amount
   synonyms: scintilla, shred, smidge, smidgen, smidgeon, smidgin, tittle, whit

   type of:

   small indefinite amount, small indefinite quantity

   an indefinite quantity that is below average size or magnitude
2. noun

   the 9th letter of the Greek alphabet
   type of:

   alphabetic character, letter, letter of the alphabet

   the conventional characters of the alphabet used to represent speech