sinister

As adjectives the difference between sinister and repugnant

is that sinister is inauspicious, ominous, unlucky, illegitimate (as in bar sinister) while repugnant is offensive or repulsive; arousing disgust or aversion.

Sinister is a related term of deadly.

In obsolete|lang=en terms the difference between sinister and deadly

is that sinister is (obsolete) wrong, as springing from indirection or obliquity; perverse; dishonest while deadly is (obsolete) fatally, mortally.

As adjectives the difference between sinister and deadly

is that sinister is inauspicious]], ominous, unlucky, illegitimate (as in [[w:bar sinister|bar sinister ) while deadly is (lb) subject to death; mortal.

As an adverb deadly is

(obsolete) fatally, mortally.

As an adjective sinister is

inauspicious]], ominous, unlucky, illegitimate (as in [[w:bar sinister|bar sinister ).

Sinister is a related term of vicious.

As adjectives the difference between sinister and vicious

is that sinister is inauspicious]], ominous, unlucky, illegitimate (as in [[w:bar sinister|bar sinister ) while vicious is pertaining to vice; characterised by immorality or depravity.

Horrible is a related term of sinister.

As adjectives the difference between horrible and sinister

is that horrible is causing horror; terrible; shocking while sinister is inauspicious]], ominous, unlucky, illegitimate (as in [[w:bar sinister|bar sinister ).

As a noun horrible

is a thing that causes horror; a terrifying thing, particularly a prospective bad consequence asserted as likely to result from an act.

Macabre is a related term of sinister.

As adjectives the difference between macabre and sinister

is that macabre is representing or personifying death while sinister is inauspicious]], ominous, unlucky, illegitimate (as in [[w:bar sinister|bar sinister ).

Sinister is a related term of appalling.

As adjectives the difference between sinister and appalling

is that sinister is inauspicious]], ominous, unlucky, illegitimate (as in [[w:bar sinister|bar sinister ) while appalling is horrifying and astonishing.

As a verb appalling is

.

As adjectives the difference between unsafe and sinister

is that unsafe is not safe; dangerous while sinister is inauspicious, ominous, unlucky, illegitimate (as in bar sinister).

As adjectives the difference between insidious and sinister

is that insidious is producing harm in a stealthy, often gradual, manner while sinister is inauspicious, ominous, unlucky, illegitimate (as in bar sinister).

Sinister is a related term of menacing.

As adjectives the difference between sinister and menacing

is that sinister is inauspicious]], ominous, unlucky, illegitimate (as in [[w:bar sinister|bar sinister ) while menacing is suggesting imminent harm.

As a verb menacing is

.

As a noun menacing is

the act of making menaces or threats.