CEFR C1

conventionalist

noun

Meaning 1: when discussing person

A person of conventional behaviour or beliefs. It can have more than one sense, so use the alternate meanings and examples to choose the meaning that matches your sentence.

Meaning 2: sense 2

(philosophy) Of, pertaining to, or supporting conventionalism

Meaning 3: sense 3

(philosophy) A supporter or adherent of conventionalism

Meaning 4: sense 4

(history) A member or supporter of the French National Convention