What words have 3 of the letter r

Such list can comprise more than 2 000 words.

Here are some, starting with A:

abhorrer
abhorrers
adrenocorticosteroid
adrenocorticosteroids
adrenocorticotrophic
adrenocorticotrophin
adrenocorticotrophins
adrenocorticotropic
adrenocorticotropin
adrenocorticotropins
afterburner
afterburners
agroforester
agroforesters
agroforestries
agroforestry
airworthier
antiterrorism
antiterrorisms
antiterrorist
antiterrorists
appropriator
appropriators
arbitrager
arbitragers
arbitrageur
arbitrageurs
arbitrarily
arbitrariness
arbitrarinesses
arbitrary
arbitrator
arbitrators
arboricultural
arboriculture
arboricultures
armorer
armorers
armourer
armourers
arranger
arrangers
arrayer
arrayers
arrear
arrearage
arrearages
arrears
arrester
arresters
arrestor
arrestors
arriver
arrivers
arrowroot
arrowroots
arrowworm
arrowworms
arteriogram
arteriograms
arteriographic
arteriographies
arteriography
arteriolar
arterioscleroses
arteriosclerosis
arteriosclerotic
arteriosclerotics
arthrospore
arthrospores
astrophotographer
astrophotographers
atrioventricular
autotransformer
autotransformers

Herculean effort on that one, Timur. I salute you.

It was more in the Augean line, I had to find ways to save me efforts..