Word: speeding
Part of speech: Adjective
Syllables: speed
ing
Definition: Specifically, travelling at an illegal speed (of vehicles, motorists).
Morphemes:
Affix: speed
Language: en
PoS: Verb
Meaning: To exceed the speed limit.
Affix: -ing
Language: en
PoS: Suffix
Meaning: Used to form uncountable nouns from verbs denoting the act of doing something, an action.