Word: unslacking
Part of speech: Adjective
Syllables: un
slack
ing
Definition: Not slacking; without respite.
Morphemes:
Affix: un-
Language: en
PoS: Prefix
Meaning: absent; lacking; not; negative
Affix: slack
Language: en
PoS: Adjective
Meaning: lacking diligence or care; not earnest or eager.
Affix: -ing
Language: en
PoS: Suffix
Meaning: Used to form uncountable nouns from verbs denoting the act of doing something, an action.