| BLUSTROUS | • blustrous adj. Obsolete form of blusterous. • BLUSTROUS adj. (Shakespeare) inclined to bluster, also BLUSTEROUS. |
| BULRUSHES | • bulrushes n. Plural of bulrush. • BULRUSH n. an aquatic plant, reed-mace, also BULLRUSH. |
| DESULFURS | • desulfurs v. Third-person singular simple present indicative form of desulfur. • DESULFUR v. to free from sulphur. |
| FRUSTULES | • frustules n. Plural of frustule. • FRUSTULE n. the siliceous two-valved shell of a diatom. |
| LUXURISTS | • luxurists n. Plural of luxurist. • LUXURIST n. someone given to luxury. |
| PURSEFULS | • pursefuls n. Plural of purseful. • PURSEFUL n. enough to fill a purse. |
| REGULUSES | • reguluses n. Plural of regulus. • REGULUS n. (Latin) a mass that forms beneath the slag in a furnace. |
| RIVULUSES | • RIVULUS n. a small tropical American fish. |
| SLUMBROUS | • slumbrous adj. Alternative form of slumberous. • SLUMBROUS adj. full of sleep, also SLUMBEROUS, SLUMBERY, SLUMBRY. |
| SUCCURSAL | • succursal adj. Subsidiary (to a religious establishment). • succursal adj. Serving to aid or help; serving as a chapel of ease; tributary. • succursal n. A subsidiary parish. |
| SULFURETS | • sulfurets n. Plural of sulfuret. • SULFURET v. to treat with sulfur, also SULPHURET. |
| SULFURISE | • sulfurise v. Alternative spelling of sulfurize. • SULFURISE v. to combine or impregnate with sulphur or any of its compounds, also SULFURIZE, SULPHURISE, SULPHURIZE. |
| SULFUROUS | • sulfurous adj. (American spelling) Containing sulfur. • sulfurous adj. (Chemistry) Of, or relating to sulfur, especially in its lower oxidation state. • SULFUROUS adj. containing sulphur in lower valency; pertaining to hellfire, also SULPHUROUS. |
| SULFURYLS | • sulfuryls n. Plural of sulfuryl. • SULFURYL n. a bivalent sulphone group, also SULFONYL, SULPHONYL, SULPHURYL. |
| SUPERPLUS | • superplus n. (Obsolete) surplus. • SUPERPLUS n. (obsolete) a surplus. |
| SURCULOSE | • surculose adj. (Botany) Producing suckers or sucker-like shoots. • SURCULOSE adj. having or producing suckers. |
| SURPLUSED | • surplused v. Simple past tense and past participle of surplus. • SURPLUS v. to be in excess. |
| SURPLUSES | • surpluses n. Plural of surplus. • surpluses v. Third-person singular simple present indicative form of surplus. • SURPLUS n. an excess. |
| URUSHIOLS | • urushiols n. Plural of urushiol. • URUSHIOL n. (Japanese) a poisonous and irritant oily liquid present in poison ivy and the lacquer tree. |