Word: speechless
Part of speech: Adjective
Syllables: speech
less
Definition: Not speaking; not knowing what to say; silent, especially due to surprise, amazement, etc.
Morphemes:
Affix: speech
Language: en
PoS: Noun
Meaning: A style of speaking.
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.