subzero

• POS: Adjective
• HYPHEN: sub=zer=o

OXFORD DICTIONARY

subzero, adj. (esp. of temperature) lower than zero.

THESAURUS

subzero

Siberian, algid, arctic, below zero, biting, bitter, bitterly cold, bleak, boreal, brisk, brumal, cold, cold as charity, cold as death, cold as ice, cold as marble, crisp, cutting, freezing, freezing cold, frigid, gelid, glacial, hibernal, hiemal, hyperborean, ice-cold, ice-encrusted, icelike, icy, inclement, keen, nipping, nippy, numbing, penetrating, piercing, pinching, raw, rigorous, severe, sharp, sleety, slushy, snappy, stone-cold, supercooled, winterbound, winterlike, wintery, wintry