Esperanto

Suffix

-ulo (nominal)

1. person characterized by the quality expressed in the root

   avara ‎(“covetous”) → avarulo ‎(“a miser”)

   juna ‎(“young”) → junulo ‎(“a young person”)

2. (zoology) member of group of animals characterized by the root

   mamulo, duvalvulo, skvamulo, spongulo, vertebrulo

Derived terms

See also

Ido

Etymology

Back-formation from maskula ‎(“masculine”).

Suffix

-ulo

1. suffix denoting masculinity or a male

   puero ‎(“child”) + ‎-ulo → ‎puerulo ‎(“boy”)

Antonyms

• -ino

Derived terms

Latin

Suffix

-ulō

1. dative masculine singular of -ulus
2. dative neuter singular of -ulus
3. ablative masculine singular of -ulus
4. ablative neuter singular of -ulus