"triple" in the noun sense
1. triple, three-base hit, three-bagger
a base hit at which the batter stops safely at third base
2. trio, triad, triplet, triple
a set of three similar things considered as a unit
a quantity that is three times as great as another
"triple" in the verb sense
1. triple, treble
"Triple your income!"
hit a three-base hit
"triple" in the adjective sense
1. ternary, treble, triple, triplex
having three units or components or elements
"a ternary operation"
"a treble row of red beads"
"overcrowding made triple sessions necessary"
"triple time has three beats per measure"
2. treble, threefold, three-fold, triple
three times as great or many
"a claim for treble (or triple) damages"
"a threefold increase"
Source: WordNet® (An amazing lexical database of English)
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