perhaps because it's basically the French usage? look for deracinated.

Yep, it only appears in my French dictionary, and it only appears as verb (uproot, deprive). Declension of the infinitive "déraciner".

Declension of the infinitive "déraciner".

Declension refers to the inflection of nominal forms and conjugation to the verbal ones. Verbal forms of each are: decline and conjugate. Inflect (inflection / inflexion) can be used as a sort of generic.

déraciné, a.
[Fr.: see DERACINATE v.]
‘Uprooted’ from one's (national or social) environment. Also as n.
1921 19th Cent. May 770 The unseen Jew déraciné provides munitions of argument for the revolutionary group. 1926 J. BUCHAN Dancing Floor I. vi, She rides well, but her manners are atrocious. Lord, how I dislike these déracinés! 1931 in W. Rose Outl. Mod. Knowl. 751 To be delocalised is not be be déraciné. 1935 AUDEN & ISHERWOOD Dog beneath Skin III. iv, I'm quite déraciné, as they say in Bloomsbury. 1952 D. DAVIE Purity of Diction in Eng. Verse ii. 24 The typical déracinée, Fanny Price. 1964 R. CHURCH Voyage Home v. 71 The dreadful self-consciousness of so many déraciné Americans, aping the hyper-civilized European decadents. 1967 Listener 22 June 832/1 Our ‘dynamic’ epoch has..produced a succession of déracinés ranging from Bartók to Stravinsky.
OED2