quadrupled
/k w ä d ˈr o͞o p ə l d/
quäd-rū-pled
Rule 1
Q always needs a U; therefore, U is not a vowel here.
Word Forms
Base Form
quadruple
Past Tense
quadrupled
Past Participle
quadrupled
Present Participle
quadrupling
3rd Person Singular
quadruples
Plural
quadruples
Words ending in -ed
Devaluated Unchanged Expended Collateralized Approved Parodied
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