doleful

As a letter s

is the letter s with a.

As an adjective doleful is

filled with grief, mournful, bringing feelings of sadness.

Dark is a related term of doleful.

As adjectives the difference between dark and doleful

is that dark is having an absolute or (more often) relative lack of light while doleful is filled with grief, mournful, bringing feelings of sadness.

As a noun dark

is a complete or (more often) partial absence of light.

Doleful is a related term of miserable.

As adjectives the difference between doleful and miserable

is that doleful is filled with grief, mournful, bringing feelings of sadness while miserable is destitute, impoverished.

As a noun miserable is

wretch, scoundrel.

As adjectives the difference between sullen and doleful

is that sullen is having a brooding ill temper; sulky while doleful is filled with grief, mournful, bringing feelings of sadness.

As a noun sullen

is (obsolete) one who is solitary, or lives alone; a hermit.

As adjectives the difference between doleful and false

is that doleful is filled with grief, mournful, bringing feelings of sadness while false is (label) one of two states of a boolean variable; logic.

As adjectives the difference between doleful and undefined

is that doleful is filled with grief, mournful, bringing feelings of sadness while undefined is lacking a definition or value.

As an adjective doleful

is filled with grief, mournful, bringing feelings of sadness.

As a verb grieved is

(grieve).

Ominous is a related term of doleful.

As adjectives the difference between ominous and doleful

is that ominous is of or pertaining to an omen or to omens; being or exhibiting an omen; significant while doleful is filled with grief, mournful, bringing feelings of sadness.