sulphurous vs sulfurous

sulphurous and sulfurous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
sulphurous	No	Yes	No	No
sulfurous	No	Yes	No	No

As adjectives, sulphurous and sulfurous are synonyms defined as:

sulphurous and sulfurous: of or related to or containing sulfur or derived from sulfur

As adjectives, sulphurous and sulfurous are synonyms defined as:

Other synonyms of sulphurous include stifling, sultry.

As adjectives, sulphurous and sulfurous are synonyms defined as:

Other synonyms of sulphurous include acerb, acerbic, acid, acrid, bitter, blistering, caustic, virulent, vitriolic.

sulphurous (adjective)	sulfurous (adjective)
of or related to or containing sulfur or derived from sulfur	of or related to or containing sulfur or derived from sulfur
characterized by oppressive heat and humidity	characterized by oppressive heat and humidity
harsh or corrosive in tone	harsh or corrosive in tone