Bighead and Bigheaded

Bighead noun - An often unjustified feeling of being pleased with oneself or with one's situation or achievements.

Bigheaded and bighead are semantically related. In some cases you can use "Bigheaded" instead an adjective "Bighead".

Bigheaded adjective - Having too high an opinion of oneself.

Bighead and bigheaded are semantically related. Sometimes you can use "Bighead" instead an adjective "Bigheaded".