1. Naughtily or annoyingly playful
   - arch, impish, mischievous, pixilated, prankish, puckish, wicked, pixillated

See also: playful

• genus Stylomecon
• genus Stylophorum
• genus Styphelia
• genus Styracosaurus
• genus Styrax
• genus Subularia
• genus Suillus
• genus Suksdorfia
• genus Sula
• genus Sundacarpus
• genus Suricata
• genus Surnia
• genus Sus
• genus Swainsona
• genus Swertia
• genus Swietinia
• genus Sylvilagus
• genus Symphalangus
• genus Symphoricarpos
• genus Symphytum
• genus Symplocarpus
• genus Symplocus
• genus Synagrops
• genus Synanceja
• genus Synaptomys