quintupled
/k w ĭ n t ˈū p ə l d, ˌk w ĭ n ˈt ŭ p ə l d/
quĭn-tū-pled, quĭn-tŭ-pled
Rule 1
Q always needs a U; therefore, U is not a vowel here.
Word Forms
Base Form
quintuple
Past Tense
quintupled
Past Participle
quintupled
Present Participle
quintupling
3rd Person Singular
quintuples
Plural
quintuples
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