The head of a school or organization.

A sum of money or an investment amount.

मुख्य धनराशि

English Usage: He paid off the principal on his mortgage.

Hindi Usage: उसने अपनी बंधक की मुख्य धनराशि चुका दी।

Most important; primary.

सबसे महत्वपूर्ण

English Usage: The principal reason for the failure was lack of preparation.

Hindi Usage: असफलता का सबसे महत्वपूर्ण कारण तैयारी की कमी था।