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

See also: theoretic, theoretical

• swell up
• swelled
• swelled head
• swellhead
• swellheaded
• swelling
• swelter
• sweltering
• sweltry
• swept
• sweptback
• sweptwing
• Swertia
• Swertia perennia
• Swertia speciosa
• swerve
• swerving
• sweven
• Swietinia
• Swietinia macrophylla
• Swietinia mahogani
• swift
• swift-footed
• swiftlet
• swiftly