unoptional

op·tion·al

U u

Definitions of unoptional word

adjective unoptional left to one's choice; not required or mandatory: Formal dress is optional. 1
adjective unoptional leaving something to choice. 1

before 1755

One of the 47% newest English words

First recorded in 1755-65; option + -al1

noun

adjective

verb

adverb

pronoun

preposition

conjunction

determiner

exclamation

A common word. It’s meaning is known to most children of preschool age. About 81% of English native speakers know the meaning and use the word.

Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".