Answer:

iota

Answer	Crossword Clue
IOTA	Frat-house letter
IOTA	Greek vowel
IOTA	Small amount

IOTA	Small sorority letter?
IOTA	Smidgen
IOTA	Tiny bit
IOTA	Whit
IOTA	Greek letter
IOTA	I, as in Ithaca?
IOTA	Scintilla
IOTA	Small bit

IOTA	The least bit
IOTA	A wee bit
IOTA	Jot
IOTA	Tittle
IOTA	Mite
IOTA	Wee bit
IOTA	I as in Iphigenia
IOTA	Teensy bit

IOTA	Tiny amount
IOTA	Ninth letter of Greek alphabet
IOTA	Tad
IOTA	Trace
IOTA	Shred
IOTA	Least little bit
IOTA	Jot or tittle
IOTA	Speck

IOTA	Tiny speck
IOTA	Teeny bit
IOTA	Just a smidge
IOTA	Heap's opposite
IOTA	Mere speck
IOTA	Small quantity
IOTA	Kappa's predecessor
IOTA	Greek "I"

IOTA	Minuscule amount
IOTA	Minute amount
IOTA	Bit
IOTA	Greek "i"
IOTA	Itty-bitty bit