Word: sleepless
Part of speech: Adjective
Syllables: sleep
less
Definition: Characterized by an absence of sleep.
Morphemes:
Affix: sleep
Language: en
PoS: Noun
Meaning: An act or instance of sleeping.
Affix: -less
Language: en
PoS: Suffix
Meaning: Lacking (something); without (something). Added usually to a noun to form an adjective signifying a lack of that noun.