Word: thoughtproof
Part of speech: Adjective
Syllables: thought
proof
Definition: Resistant to thought; not permitting a person to think.
Morphemes:
Affix: thought
Language: en
PoS: Verb
Meaning: Simple past tense and past participle of think; ponder; reflect on, or reason about
Affix: -proof
Language: en
PoS: Suffix
Meaning: Used to form adjectives denoting an impervious or impenetrable quality.