frosty adj.

1 cold enough for frost

VERBS be, look | become, get, turn when the weather turns frosty | remain, stay

ADV. very

PHRASES cold and frosty The day dawned cold and frosty.

2 unfriendly

VERBS be, look, seem | become, turn He cool green eyes became positively frosty. | remain

ADV. decidedly, distinctly, positively, very The atmosphere in the room was decidedly frosty. | pretty