drowsy

As an adjective drowsy

is inclined to drowse; heavy with sleepiness; lethargic; dozy.

As an initialism nap is

.

As adjectives the difference between drowsy and bleary

is that drowsy is inclined to drowse; heavy with sleepiness; lethargic; dozy while bleary is tired, having senses dulled by exhaustion.

As adjectives the difference between vigilant and drowsy

is that vigilant is watchful, especially for danger or disorder; alert; wary while drowsy is inclined to drowse; heavy with sleepiness; lethargic; dozy.

As an adjective drowsy

is inclined to drowse; heavy with sleepiness; lethargic; dozy.

As a noun fatigue is

a weariness caused by exertion; exhaustion.

As a verb fatigue is

to tire or make weary by physical or mental exertion.

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.

Dronish is a related term of drowsy.

As adjectives the difference between dronish and drowsy

is that dronish is like a drone, slow, sluggish while drowsy is inclined to drowse; heavy with sleepiness; lethargic; dozy.

As adjectives the difference between drowsy and slumbrous

is that drowsy is inclined to drowse; heavy with sleepiness; lethargic; dozy while slumbrous is slumberous.

As a noun tire

is bundle, skein, hank.

As an adjective drowsy is

inclined to drowse; heavy with sleepiness; lethargic; dozy.

Drowsy is a related term of lacklustre.

As adjectives the difference between drowsy and lacklustre

is that drowsy is inclined to drowse; heavy with sleepiness; lethargic; dozy while lacklustre is (british).

Drowsy is a related term of tarnished.

As an adjective drowsy

is inclined to drowse; heavy with sleepiness; lethargic; dozy.

As a verb tarnished is

(tarnish).