myEtymology.com: English etymology of rationalism

Etymology of the English word rationalism

the English word rationalism

derived from the English word rational

derived from the Old French word racionel

derived from the Latin word rationalis (measurable; that has a ratio; knowing rationally; rational, of, possessing reason; theoretician; accountant)

derived from the Latin word ratio (account, reckoning, invoice)

derived from the Latin word ratus (established, authoritative; fixed; rat)

derived from the Latin word reri (think, regard; deem)

derived from the Proto-Indo-European root *ar-

using the English suffix -ism

derived from the French suffix -ism

derived from the Latin suffix -ismus

derived from the Greek suffix -ismos, -ισμός

suffix for verbs ending in "-izein" (cf. Latin "-izare")