Word: unchildish
Part of speech: Adjective
Syllables: un
child
ish
Definition: Not childish.
Morphemes:
Affix: un-
Language: en
PoS: Prefix
Meaning: not
Affix: child
Language: en
PoS: Noun
Meaning: A figurative offspring, particularly.
Affix: -ish
Language: en
PoS: Suffix
Meaning: Somewhat, rather.