Full of self-esteem is a term used to describe someone who has a high opinion of themselves and their abilities. The two crossword solutions for this term are 'PROUD' (5 letters) and 'proudasapeacock' (15 letters). The first solution, 'PROUD, ' is a simple adjective that means having or displaying a sense of one's own worth or importance. The second solution, 'proudasapeacock, ' is an idiom that means to be extremely PROUD and boastful. Both solutions imply a strong sense of self-esteem.