小

1. noun, prefix smallness; small item
2. noun, abbreviation short month (i.e. having fewer than 31 days)
3. abbreviation urine; piss; pee; urination
4. noun, prefix, abbreviation elementary school
5. prefix smaller (of two things, places, etc. with the same name); inferior
6. younger (of two people with the same name); junior
7. noun, archaic unit of field area (approx. 400 sq m)

こ

1. prefix small; little; slight
2. slightly less than; just about
3. somewhat; somehow
4. sometimes derogatory minor; petty

お

1. prefix small; narrow
2. familiar prefix
3. slightly; a bit

ささ · さざ also 細

1. prefix small; little

ぐゎー

1. suffix, Ryuukyuu-ben small; little; dear

さ also 狭

1. prefix narrow; thin