1. Based primarily on surmise rather than adequate evidence
   - conjectural, divinatory, hypothetical, supposed, suppositional, suppositious, supposititious

See also: theoretic, theoretical

• Gerardia virginica
• Gerardus Mercator
• Gerbera
• Gerbera jamesonii
• Gerbert
• gerbil
• gerbille
• Gerbillinae
• Gerbillus
• Gerea
• Gerea canescens
• gerenuk
• gerfalcon
• Gerhard Gerhards
• Gerhard Herzberg
• Gerhard Kremer
• geriatric
• geriatrician
• geriatrics
• germ
• germ cell
• germ layer
• germ plasm
• germ pore
• germ theory