1 adv Something that happens thrice happens three times.
OLD-FASHIONED ADV with v, ADV adv, ADV n
They should think not twice, but thrice, before ignoring such advice..., She plays tennis thrice weekly.
2 adv You can use thrice to indicate that something is three times the size, value, or intensity of something else.
OLD-FASHIONED ADV n
...moving at thrice the speed of sound.
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