glacial
adj. C1 Advanced US //ˈɡɫeɪʃəɫ// UK //ɡlˈeɪʃəl// glacial
adj. moving or happening very slowly. It can also describe things that are extremely cold or relate to large masses of ice.
adj. relating to or formed by glaciers; metaphorically describes a process that moves at an exceptionally slow pace. Often used to emphasize the frustration of a delay.
The line at the bank moved at a glacial pace.
Progress on the new law has been glacial, with politicians debating the same three points for over a year.
The landscape still bears the scars of the last glacial period, with deep valleys carved out by the slow, irresistible movement of ice sheets.
Usage
Often pairs with the noun 'pace' to create a common idiom for extreme slowness.