The action of boasting about oneself.
Late 16th century; earliest use found in Arthur Golding (d. 1606), translator. From self- + boasting.
Of a person: that boasts about himself or herself. Of words, actions, personal qualities, etc.: that boast about or serve to glorify the person who does, says, or possesses them; characterized by self-boasting.
Late 16th century; earliest use found in Master Broughtons Letters Answered. From self- + boasting.