Pampered, coddled, or spoiled, especially a person who is treated indulgently.
From cocker (to pamper or indulge, possibly from 'cock-fight' terminology or from treating a rooster as a pet) + -ed (past participle/adjective suffix). The verb 'cocker' emerged in the 16th century with the meaning of treating something as a pet or spoiling it.
The verb 'cocker' might come from people keeping roosters as beloved pets or fighting birds, giving them special attention and care—so a 'cockered' person is someone treated like a prize bird rather than left to fend for themselves! This shows how cockfighting culture influenced everyday English vocabulary.
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