DictionaryglacialExtremely slow
adjective

glacial

GLAY-shul/ˈɡleɪʃl/

Extremely slow, like the movement of a glacier.

The computer task makes glacial progress while the waiting user falls asleep.

A computer task advances at a glacial pace: across two matching views, six hours pass while its loading bar barely moves and the waiting user falls asleep.
Etymology

From icy and glacier-related, the word came to evoke the extremely slow movement of glaciers.

More examples

  • Negotiations move at a glacial speed.
  • The line makes glacial progress toward the door.

Forms

glacial

Similar words

slow
A neutral general description of low speed.
sluggish
Suggests a lack of energy or responsiveness.