Likely a French-styled diminutive form built on Aid- names, giving a petite and elegant sound.
Aidette draws from one of the most venerable naming traditions in the Celtic world, reaching back through the Irish Aideen — the anglicized form of the Old Irish Étaín — to a figure of extraordinary mythological resonance. Étaín is the heroine of Tochmarc Étaíne, the Wooing of Étaín, one of the oldest and most beautifully sustained narratives in Irish mythology, in which a woman of the divine Tuatha Dé Danann is transformed by a jealous rival into a butterfly, carried on the winds for a thousand years, and reborn as a mortal woman without memory of her former life. The story is a meditation on identity, love, transformation, and the persistence of the soul — and the name Étaín has been synonymous with these themes in Irish literary imagination ever since.
The French diminutive suffix -ette attached to Aideen creates Aidette, a fusion that softens the Irish root and gives it a Continental elegance, in the same tradition that produced names like Colette, Lisette, and Jeannette. This kind of hybrid naming — grafting a Romance diminutive onto a Celtic base — reflects centuries of linguistic and cultural intermingling between the British Isles and France, and creates something genuinely new while honoring both inheritances. The -ette ending also gives the name a modern boutique quality, the kind of subtle elongation that parents use to individualize an existing name.
Aidette remains quite rare, which means it occupies the sweet spot many parents seek: recognizably connected to a known tradition (the Irish Aiden/Aideen family is broadly understood) while sitting entirely outside the crowded mainstream. A child named Aidette inherits both the butterfly mythology of ancient Ireland and the sun-drenched cadence of the French suffix — two very different worlds meeting in four syllables.