1) Acerb 2) Acerbic 3) Acid 4) Acrid 5) Bitter 6) Blistering 7) Caustic 8) Harsh or corrosive in tone 9) Like some pollutants 10) Of the yellow color of sulfur 11) Sulphurous 12) Unpleasant 13) Venomous 14) Virulent 15) Vitriolic 1) Acid 2) Blistering 3) Caustic 4) Hot 5) Stifling 6) Sulphurous 7) Unpleasant 8) Vitriolic 
Designating a sulfur compound in which sulfur has a valence of +4 as contrasted to sulfuric compounds in which sulfur has a valence of +6, or sulfides (-2). ... (05 Mar 2000) ... 
Type: Term Pronunciation: sŭl′fŭ-rŭs Definitions: 1. Designating a sulfur compound in which sulfur has a valence of +4 compared with sulfuric compounds in which sulfur has a valence of +6, or sulfides (−2).
sulphurous adjective of or related to or containing sulfur or derived from sulfur
of, pertaining to, or containing sulfur, esp. in the tetravalent state. · of the yellow color of sulfur. · sulphurous (defs. 2, 3).