dull

Dull is a related term of heartless.

As adjectives the difference between dull and heartless

is that dull is lacking the ability to cut easily; not sharp while heartless is without a heart; specifically, without feeling, emotion, or concern for others; uncaring.

As a verb dull

is to render dull; to remove or blunt an edge or something that was sharp.

Dull is a related term of smother.

In lang=en terms the difference between dull and smother

is that dull is to lose a sharp edge; to become dull while smother is figuratively: to perish, grow feeble, or decline, by suppression or concealment; be stifled; be suppressed or concealed.

As verbs the difference between dull and smother

is that dull is to render dull; to remove or blunt an edge or something that was sharp while smother is to suffocate; stifle; obstruct, more or less completely, the respiration of.

As an adjective dull

is lacking the ability to cut easily; not sharp.

As a noun smother is

that which smothers or appears to smother, particularly .

Diminished is a related term of dull.

As verbs the difference between diminished and dull

is that diminished is (diminish) while dull is to render dull; to remove or blunt an edge or something that was sharp.

As adjectives the difference between diminished and dull

is that diminished is lessened, reduced while dull is lacking the ability to cut easily; not sharp.

Inhibit is a related term of dull.

As verbs the difference between inhibit and dull

is that inhibit is to hinder; to restrain while dull is to render dull; to remove or blunt an edge or something that was sharp.

As an adjective dull is

lacking the ability to cut easily; not sharp.

Backward is a related term of dull.

As adjectives the difference between backward and dull

is that backward is (of motion) pertaining to the direction towards the back while dull is lacking the ability to cut easily; not sharp.

As an adverb backward

is (of motion) in the direction towards the back; backwards.

As a noun backward

is the state behind or past.

As a verb dull is

to render dull; to remove or blunt an edge or something that was sharp.

As adjectives the difference between mood and dull

is that mood is tired while dull is lacking the ability to cut easily; not sharp.

As a verb dull is

to render dull; to remove or blunt an edge or something that was sharp.

As adjectives the difference between homogeneous and dull

is that homogeneous is of the same kind; alike, similar while dull is lacking the ability to cut easily; not sharp.

As a verb dull is

to render dull; to remove or blunt an edge or something that was sharp.

As adjectives the difference between dull and ugly

is that dull is lacking the ability to cut easily; not sharp while ugly is displeasing to the eye; not aesthetically pleasing.

As a verb dull

is to render dull; to remove or blunt an edge or something that was sharp.

As a noun ugly is

(slang|uncountable) ugliness.

As adjectives the difference between reluctant and dull

is that reluctant is opposing; offering resistance (to) while dull is lacking the ability to cut easily; not sharp.

As a verb dull is

to render dull; to remove or blunt an edge or something that was sharp.

As an adjective dull

is lacking the ability to cut easily; not sharp.

As a verb dull

is to render dull; to remove or blunt an edge or something that was sharp.

As a proper noun doom is

(video games|trademark) a popular first-person shooter video game, often regarded as the father of the genre.