'Amoritic' originates from English, formed by the noun 'Amorite' plus the adjectival suffix '-ic' (from Latin/Greek), where 'Amorite' ultimately comes from Akkadian 'Amurru' meaning 'western (land/people)'.

'Amorite' entered Greek and Latin forms from Akkadian 'Amurru'; it passed into English as 'Amorite', and the adjective 'Amoritic' developed later by adding the suffix '-ic' to denote relation.

Initially it referred directly to the people or region called 'Amurru' (the Amorites) and their language; over time it has been used to denote anything relating to the Amorites or their language/culture, including modern scholarly descriptions.