Synonyms for Ice over:

n.

frosty, glare ice, icicle, icy, sharp, hard, frozen, frost, black ice. ice over (noun)
frost over, ice up.

v.

freeze (verb)
frost, ice up.

Other synonyms:

frosty, glare ice, icy, black ice, icicle. frost, frozen. hard. sharp. Other relevant words:
frost.