longstanding
Established over time
Longstanding describes something that has existed or continued for a long time: a longstanding tradition, a longstanding friendship, a longstanding dispute.
The word emphasizes duration and persistence rather than age alone—a longstanding agreement remains active, not merely old.
Continuing through time
- abidingContinuing without change
- perennialRecurring each year
- persistentContinuing despite difficulty
- chronicPersisting over time
perpetual · continual · deep-rooted · inveterate · entrenched · ingrained · established · embedded
Respected due to age
- ancestralOf one's forebears
- heritageInherited cultural legacy
- legacyWhat's passed down
- customHabitual group practice
convention · historic · established · ancient · age-old · classical · venerable · storied
Worthy of confidence
- dependableWorthy of trust
- provenEstablished as fact
- tried-and-trueProven reliable over time
- faithfulConsistently loyal and true
steadfast · loyal · consistent · reputable · credible · solid · steady · unwavering
Bitter ongoing rivalry
- rivalryOngoing contest between opponents
- grievanceFormal claim of unfairness
- conflictOpposition between parties
- quarrelAngry verbal dispute
animosity · grudge · enmity · contention · disagreement · vendetta · antagonism · hostility
lasting
Continuing through time
- abidingContinuing without change
- perennialRecurring each year
- persistentContinuing despite difficulty
chronic · perpetual · continual · deep-rooted · inveterate · entrenched · ingrained · established · embedded · rooted
time-honored
Respected due to age
custom · convention · historic · established · ancient · age-old · classical · venerable · storied · institutional
trustworthy
Worthy of confidence
- dependableWorthy of trust
- provenEstablished as fact
- tried-and-trueProven reliable over time
faithful · steadfast · loyal · consistent · reputable · credible · solid · steady · unwavering · stable
feud
Bitter ongoing rivalry
- rivalryOngoing contest between opponents
- grievanceFormal claim of unfairness
- conflictOpposition between parties
quarrel · animosity · grudge · enmity · contention · disagreement · vendetta · antagonism · hostility · strife
stand, standing, understanding, stands, outstanding, withstand, long-lasting, long-term, misunderstanding