Word: clueless
Part of speech: Adjective
Syllables: clue
less
Definition: Lacking knowledge or understanding; uninformed; oblivious.
Morphemes:
Affix: clue
Language: en
PoS: Verb
Meaning: To provide someone with information which he or she lacks (often used with "in" or "up").
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.