obtus

obtuse

adjective ob-TYU Rare

Origin: Latin 'obtusus' (blunted), past participle of 'obtundere'.

Also means

slow-witted

Usage Note

Obtus is used both in geometry (un angle obtus — an angle greater than 90°) and figuratively for a person who is dense or slow to understand, similar to English 'obtuse'. The feminine form is obtuse, and learners should note the final -s is silent in the masculine.

Examples

"Son raisonnement était vraiment obtus."

Natural Translation

His reasoning was truly obtuse.

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