glacial

US /ˈɡleɪ.ʃəl/
UK /ˈɡleɪ.ʃəl/
"glacial" picture
1.

relating to or denoting the presence or effects of glaciers or ice sheets

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The landscape was shaped by glacial erosion.
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We studied the effects of the last glacial period.
:
icyfrozengelidfrigidarctic
2.

moving or progressing extremely slowly

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The committee's decision-making process was glacial.
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The internet speed was glacial, making it impossible to stream videos.
:
slowlethargicsluggishcreepingponderous
3.

cold and unfriendly in manner

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Her response was a glacial stare.
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He received a glacial reception from the audience.
:
coldfrigidicyunfriendlyaloof