1. Thinking again about a choice previously made
   - reconsideration, second thought, rethink 
2. An addition that was not included in the original plan
   "the garage was an afterthought"

Derived forms: afterthoughts

Type of: addition, add-on, change of mind, flip-flop, improver, reversal, turnabout [N. Amer], turnaround

• isobutylene
• isobutylphenyl propionic acid
• isocarboxazid
• isochoric
• isochromatic
• isochronal
• isochrone
• isochronous
• isoclinal
• isocline
• isoclinic
• isoclinic line
• Isocrates
• isocurvature
• isocyanate
• isocyanic acid
• isocyclic
• isodiametric
• isodynamic
• isoelectronic
• Isoetaceae
• Isoetales
• Isoetes
• isoflurane
• isogamete