RichThesaurus
longstanding
longstanding
synonyms
perennial
perdurable
unceasing
undying
old
permanent
continual
everlasting
lasting
abiding
continuing
lifelong
durable
deep-rooted
incessant
constant
chronic
eternal
long-standing
unfailing
persisting
unchanging
persistent
subconscious
recurrent
yearlong
yearly
till the cows come home
stable
sustained
unremitting
seasonal
never-ending
uninterrupted
longtime
perpetual
imperishable
inbred
indelible
indissoluble
confirmed
established
inveterate
dyed-in-the-wool
long-term
deep-seated
long-lasting
inherent
lodged in one’s brain
endless
longstanding
definitions