[{"Bold_text": "verb (used with object)", "List Items": ["to keep possession of.Synonyms: preserve , hold Antonyms: lose , loose", "to continue to use, practice, etc.:to retain an old custom.", "to continue to hold or have:to retain a prisoner in custody; a cloth that retains its color.", "to keep in mind; remember .Antonyms: forget", "to hold in place or position.", "to engage, especially by payment of a preliminary fee:to retain a lawyer.", "Medicine/Medical.to keep in the body, especially abnormally; fail to eliminate:I was referred to a specialty clinic and they discovered that I was retaining urine."]}]