To be absolutely assertive of oneself or one's actions, to the point of overconfidence. You assume appealing assertive of yourself—do you absolutely apperceive how to handle that machine?Learn more: ofLearn more:
An be cocksure of (oneself) idiom dictionary is a great resource for writers, students, and anyone looking to expand their vocabulary. It contains a list of words with similar meanings with be cocksure of (oneself), allowing users to choose the best word for their specific context.
Dictionary of similar words, Different wording, Synonyms, Idioms for Idiom, Proverb be cocksure of (oneself)