Word: sightproof
Part of speech: Adjective
Syllables: sight
proof
Definition: invisible; not able to be seen
Morphemes:
Affix: see
Language: en
PoS: Verb
Meaning: To perceive or detect someone or something with the eyes, or as if by sight.
Affix: -th
Language: en
PoS: Suffix
Meaning: Used to form nouns from adjectives.
Affix: -proof
Language: en
PoS: Suffix
Meaning: Used to form adjectives denoting an impervious or impenetrable quality.