interminable
Definitions
Endless or apparently endless, often used to describe something tedious.
Having or seeming to have no end; wearisomely protracted.
Examples
The meeting felt interminable as the speaker droned on about minor budget adjustments for over three hours.
After an interminable wait in the crowded airport terminal, we were finally told that our flight had been canceled.
Synonyms
endless ceaseless everlasting perpetual unending incessant boundless