1. Not having an appendage

Antonym: appendaged

• isochoric
• isochromatic
• isochronal
• isochrone
• isochronous
• isoclinal
• isocline
• isoclinic
• isoclinic line
• Isocrates
• isocurvature
• isocyanate
• isocyanic acid
• isocyclic
• isodiametric
• isodynamic
• isoelectronic
• Isoetaceae
• Isoetales
• Isoetes
• isoflurane
• isogamete
• isogamy
• isogloss
• isogon