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Synonyms for Chesty (same or very similar meaning)

WordNet sense 1 (marked by a large or well-developed chest):

WordNet sense 2 (physically strong):

WordNet sense 3 (having or showing feelings of unwarranted importance out of overbearing pride):
arrogant, self-important

WordNet sense 4 (feeling self-respect or pleasure in something by which you measure your self-worth; or being a reason for pride):

From the ODE community, based on WordNetadd/edit