Word: unseizing
Part of speech: Verb
Syllables: un
sei
zing
Definition: Present participle of unseize
Morphemes:
Affix: un-
Language: en
PoS: Prefix
Meaning: absent; lacking; not; negative
Affix: seize
Language: en
PoS: Verb
Meaning: To submit for consideration to a deliberative body.
Etymology Compounds: Affix: seisir
Language: fro
Decoded: seisir
Meaning: to take possession of; invest 
Affix: -ing
Language: en
PoS: Suffix
Meaning: Used to form present participles of verbs.