439. Their inflection is quite regular

Their inflection is quite regular, except that they lose their final न् n in the middle cases (before an initial consonant of the ending), and also in the nom. sing., where the masculine lengthens the इ i by way of compensation. The voc. sing. is in the masculine the bare stem; in the neuter, either this or like the nominative.

a. In all these respects, it will be noticed, the in-declension agrees with the an-declension; but it differs from the latter in never losing the vowel of the ending.