Albigensian
Catharist
Franciscan
Grundy
Sabbatarian
Trappist
Victorian
Waldensian
abstainer
anchorite
ascetic
austere
bhikshu
bigoted
bluenose
dervish
disapproving
dour
fakir
fanatic
firm
flagellant
fundamentalist
goody-goody
hard
hard-line
hard-nosed
hermit
hidebound
impliable
inexorable
inflexible
intolerant
iron
ironbound
ironclad
ironhanded
mendicant
mid-Victorian
moralistic
muscle-bound
narrow-minded
obdurate
obstinate
old maid
orthodox
pietist
pietistic
prig
prim
Puritanism
puritanical
purity