adjective

interminable

in-TER-mih-nuh-bul/ɪnˈtɜːrmɪnəbl/

Seeming to last forever, especially because boring or tedious.

Stuffing all these envelopes feels like an interminable task.

Two visibly bored women stuff envelopes at a table, with only a small finished pile beside an overwhelming supply of identical envelopes and folded sheets.

Etymology

inLatinnot

+terminLatinto limit or end

+ableLatincapable of being

The pieces express something that cannot be brought to an end. In the selected sense, that endlessness is felt rather than literal: a tedious experience seems never to finish.

In context

Libranima11:11

swore against the interminable staircase by I know not how many million cartloads of devils; then he resumed his ascent

The Hunchback of Notre-Dame - Hugo (Illustrated Audiobook) Part 2 of 2

More examples

After an interminable wait, someone finally answered the phone.
The road across the flat, empty plain seemed interminable.
His interminable questions left us no time to discuss anything else.

Forms

interminable

interminably adverb — for a seemingly endless time

Similar words

endless: Can describe something positive, without suggesting boredom or frustration.
protracted: Emphasizes extended duration rather than the feeling of endlessness.
monotonous: Emphasizes boring repetition rather than how long something lasts.