Yearlong [adjective]

● Eternal

● Recurrent

● Continuing

● Persistent

● Never-ending

● Chronic

● Continual

● Yearly

● Old

● Annual

● Immortal

● Permanent

● Constant

● Everlasting

● Abiding

● Ceaseless

● Deathless

● Durable

● Imperishable

● Incessant

● Inveterate

● Lasting

● Lifelong

● Long-lasting

● Sustained

● Unceasing

● Unchanging

● Undying

● Unfailing

● Uninterrupted

● Long-lived

● Perdurable

● Seasonal

● Longstanding

● Ending

● Changing

● Concluding

● Ephemeral

● Occasional

● Interrupted

● Intermittent

● Halting

● Infrequent

● Temporary

● Yearlong

● Long

● Monthlong

● Weeklong

● Daylong

● Lengthy

● Protracted

● Ongoing

● Month

● Nationwide

● Exhaustive

● Grueling

● Tumultuous

● Multistate

● Prolonged

● Wrenching

● Hourlong

● Arduous

● Multipart

● Year

● Biannual

● Painstaking

● Tortuous

● Intense

● Rigorous

● Intensive

● Multipronged

● Statewide

● Brief

● Rancorous

● Broader

● Multifaceted

● Yearly

● Exhausting

● Comprehensive

● Bimestrial

● Schoolwide

● Abrupt

● Complete

● Triduan

● Annual

● Protract

● Trimonthly

● Multiphase

● Octennial

● Thorough

● Continual

● Acrimonious

● School term

● Fitful

● Lifelong

● Trieterical

● Sabbatical

● Protractile

● Stalemated

● Vigorous

● Bimensal

● Novennial

● Latest

● Annotinous

● Bitter

● Gruelling

● Extensive

● Relentless

● Laborious

● Bimester

● Earnest

● Dizzying

● Subsequent

● Neomenia

● Bimillenary

● Hiatus

● Multiyear

● Partial

● Culmination

● Initial

● Civil year

● Draw out

● Fierce

● Tricennial

● Sabbatical year

● Atwo

● Quixotic

● Summertime

● Contentious

● Sexennially

● Protension

● Six

● Unit of time

● Messy

● Formal

● Bimonthly

● Periodic

● Unrelenting

● Unending

● Fruitless

● Torturous

● Enduring

● Trimestrial

● Storied