principal
main, principal
adjective prahn-see-PAL Less Common
Origin: Latin principalis, from princeps (first, chief)
Also means
primary, chief
Usage Note
principal agrees in gender and number: principale (f), principaux (m pl), principales (f pl). It can also function as a noun meaning 'headmaster/headmistress' in a school context. The adverb principalement means 'mainly'.
Examples
"C'est le problème principal."
Natural Translation
That is the main problem.

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