sleepless

As an adjective sleepless

is characterized by an absence of sleep.

As a noun sober is

friend.

As adjectives the difference between sleepful and sleepless

is that sleepful is (archaic) strongly inclined to sleep; very sleepy while sleepless is characterized by an absence of sleep.

Sleepless is a related term of wandering.

As adjectives the difference between sleepless and wandering

is that sleepless is characterized by an absence of sleep while wandering is which wanders; travelling from place to place.

As a noun wandering is

travelling with no preset route; roaming.

As a verb wandering is

.

As a noun insomnia

is (label).

As an adjective sleepless is

characterized by an absence of sleep.

As adjectives the difference between watchful and sleepless

is that watchful is observant, vigilant and aware while sleepless is characterized by an absence of sleep.

Unquiet is a related term of sleepless.

As adjectives the difference between unquiet and sleepless

is that unquiet is uneasy and restless; unable to settle while sleepless is characterized by an absence of sleep.

As a verb unquiet

is to disturb, disquiet.

As an adjective sleepless

is characterized by an absence of sleep.

As a noun tiredness is

the state of being tired.

As adjectives the difference between sleepy and sleepless

is that sleepy is tired; feeling the need for sleep while sleepless is characterized by an absence of sleep.

As a noun sleepy

is the gum that builds up in the eye.

Uneasy is a related term of sleepless.

As adjectives the difference between uneasy and sleepless

is that uneasy is (rare) not easy; difficult or uneasy can be restless; disturbed by pain, anxiety, or the like; disquieted; perturbed while sleepless is characterized by an absence of sleep.

Disquieted is a related term of sleepless.

As a verb disquieted

is (disquiet).

As an adjective sleepless is

characterized by an absence of sleep.