In Irish, name Brigitte means – Variant of Bridget: Derived from the Irish name Brighid, meaning the high one or strength. Brighid was a mythological Celtic goddess of fire and poetry. This name has been used regularly in the British Isles since the 17th century.Strength.. Other origins for name Brigitte include – Irish, French, French, Celtic. Name Brigitte is most often used as a girl name or female name.