treble
treb-le
noun
The highest part in musical harmony or a high-pitched sound.
"Turn up the treble on the radio."
noun
A quantity or amount that is three times as large as another.
"The team won a historic treble."
verb
To increase or cause to increase to three times the original size or amount.
"They plan to treble their output."
adjective
Consisting of three parts or three times the usual amount or size.
"We paid treble the normal price."
Thesaurus
Synonyms: multiple, triple, three-fold, threefold, ternary, triplex, high-pitched, high, soprano, dual, two-fold, double