The word defeated consists of three syllables. You can pronounce it as de-feat-ed.
Here are some common words that rhyme with "defeated" and their syllable counts:
Each of these words shares the same ending sound with "defeated" and follows a similar syllabic rhythm.
Summary: The word “defeated” has three syllables and rhymes with “completed,” “deleted,” and “depleted,” all featuring a similar three-part pronunciation pattern.