sullen

Sullen is a related term of ominous.

As adjectives the difference between sullen and ominous

is that sullen is having a brooding ill temper; sulky while ominous is of or pertaining to an omen or to omens; being or exhibiting an omen; significant.

As a noun sullen

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

As adjectives the difference between sullen and hostile

is that sullen is having a brooding ill temper; sulky while hostile is belonging or appropriate to an enemy; showing the disposition of an enemy; showing ill will and malevolence, or a desire to thwart and injure; occupied by an enemy or enemies; inimical; unfriendly.

As nouns the difference between sullen and hostile

is that sullen is one who is solitary, or lives alone; a hermit while hostile is an enemy.

Sullen is a related term of implacable.

As adjectives the difference between sullen and implacable

is that sullen is having a brooding ill temper; sulky while implacable is unplaceable; that cannot be put or placed.

As a noun sullen

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

In obsolete terms the difference between sullen and petulant

is that sullen is one who is solitary, or lives alone; a hermit while petulant is forward; pert; insolent; wanton.

As a noun sullen

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

In obsolete terms the difference between vindictive and sullen

is that vindictive is punitive while sullen is one who is solitary, or lives alone; a hermit.

As adjectives the difference between vindictive and sullen

is that vindictive is having a tendency to seek revenge when wronged, vengeful while sullen is having a brooding ill temper; sulky.

As a noun sullen is

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

Belligerent is a related term of sullen.

As adjectives the difference between belligerent and sullen

is that belligerent is engaged in warfare, warring while sullen is having a brooding ill temper; sulky.

As nouns the difference between belligerent and sullen

is that belligerent is a state or other armed participant in warfare while sullen is (obsolete) one who is solitary, or lives alone; a hermit.

As adjectives the difference between sullen and frustrated

is that sullen is having a brooding ill temper; sulky while frustrated is foiled, stopped, disappointed.

As a noun sullen

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

As a verb frustrated is

(frustrate).

As adjectives the difference between sullen and grizzly

is that sullen is having a brooding ill temper; sulky while grizzly is grey-haired, greyish.

As nouns the difference between sullen and grizzly

is that sullen is one who is solitary, or lives alone; a hermit while grizzly is a grizzly bear.

Unfriendly is a related term of sullen.

As adjectives the difference between unfriendly and sullen

is that unfriendly is not friendly; hostile; mean while sullen is having a brooding ill temper; sulky.

As nouns the difference between unfriendly and sullen

is that unfriendly is an enemy while sullen is (obsolete) one who is solitary, or lives alone; a hermit.

As nouns the difference between sector and sullen

is that sector is section while sullen is one who is solitary, or lives alone; a hermit.

As an adjective sullen is

having a brooding ill temper; sulky.