English
heirhead
Blend of heir + airhead.
Proto-Indo-European *ǵʰeh₁- ‘to leave behind, abandon’
Proto-Indo-European *ǵʰeh₁ro- ‘derelict’
Latin hērēs ‘heir, heiress’
Anglo-Norman eir
Middle English heir
English heir
Today it means
noun The foolish heir to a large fortune.
Language periods are conventional ranges, not dates for this word.
Etymograph / heirhead