grim vs inexorable

grim and inexorable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
grim	No	Yes	No	No
inexorable	No	Yes	No	No

As adjectives, grim and inexorable are synonyms defined as:

grim and inexorable: not to be placated or appeased or moved by entreaty

Other synonyms of grim include relentless, stern, unappeasable, unforgiving, unrelenting.

grim (adjective)	inexorable (adjective)
shockingly repellent; inspiring horror	not to be placated or appeased or moved by entreaty
filled with melancholy and despondency	impervious to pleas, persuasion, requests, reason
causing dejection
not to be placated or appeased or moved by entreaty
harshly ironic or sinister
harshly uninviting or formidable in manner or appearance