1. Lacking distinguishing characteristics or features
   "the featureless landscape of the steppe"

See also: plain

• sluttishness
• slutty
• Sluzhba Vneshney Razvedki
• sly
• slyboots
• slyly
• slyness
• Sm
• smack
• smack-dab
• smacker
• smacking
• small
• small beer
• small boat
• Small Business Administration
• small businessman
• small calorie
• small cane
• small capital
• small cell carcinoma
• small change
• small civet
• small computer system interface
• small cranberry