Hindi · Pronunciation Guide
MAAN-naa: a long aa, then a doubled dental n, then another long aa. Three long units in a two-beat word.
maannaa
This is one of the longest-feeling two-syllable verbs in the course: a long vowel, an extended nasal closure, and another long vowel. Rushing the n is what makes it collapse into something a listener would parse as a different form.
Listen: मानना
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मैं मानता हूँ कि यह सच है।
Maiṁ maantaa hooṁ ki yeh sach hai.
I believe that it is true.
Listen: मैं मानता हूँ कि यह सच है।
Free browser voice. Hear it read by a real native speaker inside the LingoDrop app.
"Maiṁ maantaa hooṁ ki yeh sach hai" keeps the geminate in the inflected maantaa and then introduces a subordinate clause with ki. Sach ends in an unaspirated च, so no puff of air should escape at the end of the sentence.
Learners simplify the double n and also often nasalize the preceding vowel instead, giving something like "mãanaa." Hindi wants an oral long vowel followed by a genuinely long oral nasal consonant — the nose comes in during the n, not during the vowel.