Heart mainly has one syllable. If you find that it has two, then you're putting too much stress on its pronunciation.
The word hearts has one syllable.
The word "hearts" has one syllable.
The word has three syllables.
There are two syllables in the word woman. The syllables of the word are wo-man.
There are two syllables in the word cupcakes. The syllables in the word are cup-cakes.
The word managed has two syllables. The syllables in the word are man-aged.
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The word 'heart' has one syllable.
Heart is monosyllabic.
The word "hearts" has one syllable.
whole-heart-ed 3 syllables
Two syllables in the word teacher.
The word 'answer' has 2 syllables. An-swer.
There are four syllables in the word "usually".
The word has three syllables.
The syllables in the word what is only 1 : "what".
The word apotex has three syllables. The syllables in the word are a-po-tex.