Thesaurus.com
Dictionary.com
Definitions

yearlong

[yeer-lawng, -long] / ˈyɪərˈlɔŋ, -ˈlɒŋ /
ADJECTIVE
annual
Synonyms
WEAK
a year's worth
ADJECTIVE
perennial
Synonyms
STRONGEST
chronic continual continuing eternal longstanding never-ending persistent recurrent seasonal
STRONG
annual constant everlasting immortal old permanent yearly
WEAK
abiding ceaseless deathless durable imperishable incessant inveterate lasting lifelong long-lasting long-lived perdurable sustained unceasing unchanging undying unfailing uninterrupted
Antonyms
STRONGEST
ceasing ending halting infrequent intermittent interrupted occasional temporary
STRONG
concluding ephemeral terminating
WEAK
changing
ADJECTIVE
yearly
Synonyms
STRONGEST
annual annually regularly
STRONG
perennial
WEAK
once a year per annum year by year

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Professional-services firm EY tested its mettle in predicting future behavior, asking it to replicate a global, yearlong survey of 3,600 high-net-worth investors.

From The Wall Street Journal • Mar. 11, 2026

If confirmed, this world could become the first Earth-size exoplanet in a yearlong orbit that passes in front of a nearby, bright Sun-like star, making it an especially valuable target for follow-up research.

From Science Daily • Feb. 12, 2026

Gaga’s Grammy performance comes in the middle of her nearly yearlong Mayhem Ball tour, which will end in April.

From Los Angeles Times • Feb. 1, 2026

Southern California home prices dropped again in December, capping off a yearlong skid that saw the average home value in the six-county region drop by more than $7,000.

From Los Angeles Times • Jan. 29, 2026

A yearlong government advertising campaign has highlighted the dangers of the journey.

From "Enrique's Journey" by Sonia Nazario