smidgen (n.)
- ace
- atom
- bit
- dab
- dole
- dot
- dram
- dribble
- driblet
- dwarf
- farthing
- fleck
- flyspeck
- fragment
- gobbet
- grain
- granule
- groat
- hair
- handful
- iota
- jot
- little
- lota
- minim
- minimum
- mite
- modicum
- molecule
- mote
- nutshell
- ounce
- particle
- pebble
- pinch
- pittance
- point
- ray
- scruple
- speck
- spoonful
- spot
- thimbleful
- tittle
- trivia
- whit