restorationist n.

late 14c., restoracioun, "a means of healing or restoring health, a cure; renewing of something lost," from Old French restoration (Modern French restauration) and directly from Late Latin restorationem (nominative restoratio) "a restoration, renewal," noun of action from past-participle stem of Latin restaurare (see restore).

Also used in Middle English were restorement (14c.), restoring (mid-14c.). From mid-15c. as "the repairing of a damaged or deteriorated building;" from c. 1500 as "a restoring to a former state."

The Restoration (1718) refers to the re-establishment of the monarchy under Charles II in 1660 (and by extension his whole reign); as an adjective in reference to the English theater of this period, by 1898. In French history, it refers to the (briefly interrupted) reinstatement of the Bourbons in 1814.

word-forming element meaning "one who does or makes," also used to indicate adherence to a certain doctrine or custom, from French -iste and directly from Latin -ista (source also of Spanish, Portuguese, Italian -ista), from Greek agent-noun ending -istes, which is from -is-, ending of the stem of verbs in -izein, + agential suffix -tes.

Variant -ister (as in chorister, barrister) is from Old French -istre, on false analogy of ministre. Variant -ista is from Spanish, popularized in American English 1970s by names of Latin-American revolutionary movements.