1. Not having the surface treated or coated with sizing
   "unsized paper" 
2. Not fashioned to sizes
   "unsized gloves; one size fits all"

See also: unsorted

Antonym: sized

• formication
• Formicidae
• formidability
• formidable
• formidably
• formless
• formlessly
• formlessness
• formol
• Formosa
• Formosan
• formula
• formulaic
• formularise
• formularize
• formulary
• formulate
• formulated
• formulation
• formyl
• Fornax
• fornicate
• fornication
• fornicator
• fornicatress