Obtuse

dampata

(deadened, muffled, muted)

dampsona

(deadened, muffled, muted)

malakra

(not sharp, pointed, or acute in form)

malrekta

(indirect or circuitous — see also indirect, circuitous)

malsprita

(intellectually dull)

obtuza

(geometry: larger than 90° but less than 180°)

stulta

(intellectually dull)

stumpa

(botany, zoology: blunt)

dampi

(to dull or reduce an emotion or a physical state)