Dull

barbant

(boring, not exciting or interesting — see also boring)

ennuyeux

(boring, not exciting or interesting — see also boring)

idiot

(not bright or intelligent)

mat

(not shiny)

obtus

(not bright or intelligent)

sot

(not bright or intelligent)

sourd

(not clear, muffled)

terne

(not shiny)

émoussé

(lacking the ability to cut easily; not sharp)

adoucir

(to soften, moderate or blunt)

amortir

(to soften, moderate or blunt)

assourdir

(to soften, moderate or blunt)

engourdir

(to soften, moderate or blunt)

modérer

(to soften, moderate or blunt)

user

(to render dull)

user

(to become dull)

émousser

(to render dull)

émousser

(to become dull)