Word: tireless
Part of speech: Adjective
Syllables: tire
less
Definition: Indefatigable, untiring and not yielding to fatigue
Morphemes:
Affix: tire
Language: en
PoS: Verb
Meaning: To make sleepy or weary.
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.