forthright vs straight-from-the-shoulder

forthright and straight-from-the-shoulder both are adjectives.

Word	Noun	Adjective	Verb	Adverb
forthright	No	Yes	No	Yes
straight-from-the-shoulder	No	Yes	No	No

As adjectives, forthright and straight-from-the-shoulder are synonyms defined as:

forthright and straight-from-the-shoulder: characterized by directness in manner or speech; without subtlety or evasion

Other synonyms of forthright include blunt, candid, frank, free-spoken, outspoken, plainspoken, point-blank.

forthright (adjective)	straight-from-the-shoulder (adjective)
characterized by directness in manner or speech; without subtlety or evasion	characterized by directness in manner or speech; without subtlety or evasion

forthright (adverb)	straight-from-the-shoulder (adverb)
directly and without evasion; not roundabout