obtuse

As adjectives the difference between cavalier and obtuse

is that cavalier is not caring enough about something important while obtuse is blunt; not sharp.

As a noun cavalier

is a military man serving on horse.

Drowsy is a related term of obtuse.

As adjectives the difference between drowsy and obtuse

is that drowsy is inclined to drowse; heavy with sleepiness; lethargic; dozy while obtuse is blunt; not sharp.

Irksome is a related term of obtuse.

As adjectives the difference between irksome and obtuse

is that irksome is disagreeable or troublesome by reason of long continuance or repetition; bothersome; annoying; irritating; wearisome; tedious while obtuse is blunt; not sharp.

As adjectives the difference between dreary and obtuse

is that dreary is grievous, dire; appalling while obtuse is blunt; not sharp.

As adjectives the difference between vehement and obtuse

is that vehement is vehement while obtuse is blunt; not sharp.

Obtuse is a related term of brusque.

As an adjective obtuse

is blunt; not sharp.

As a verb brusque is

.

As adjectives the difference between obtuse and ludicrous

is that obtuse is blunt; not sharp while ludicrous is idiotic or unthinkable, often to the point of being funny.

As adjectives the difference between naive and obtuse

is that naive is while obtuse is blunt; not sharp.

As an adjective obtuse

is blunt; not sharp.

As a noun abuse is

improper treatment or usage; application to a wrong or bad purpose; an unjust, corrupt or wrongful practice or custom.

As a verb abuse is

to put to a wrong use; to misapply; to use improperly; to misuse; to use for a wrong purpose or end; to pervert; as, to abuse one's authority.