explanatory

the word explanatory originates from the late latin term 'explanatorius', which itself is built upon the classical latin verb 'explanare'. this verb is a compound of 'ex-' (meaning 'out') and 'planare' (meaning 'to make level or plain'), conveying the literal image of smoothing something out or flattening it to make it clear. over time, this concrete action evolved into the abstract sense of making an idea or situation plain to the mind. the suffix '-atory' was consistently used in latin to form adjectives indicating a function or purpose, leading to the modern english meaning of 'serving to explain'.

Structure: explan (to make plain) + atory (adjective-forming suffix) explan is derived from the latin verb 'explanare', meaning 'to make level, to smooth out, to explain'. the suffix atory comes from latin '-atorius', forming adjectives that mean 'pertaining to, serving for'.