1. Capable of being affirmed or asserted
   "a quality affirmable of every member of the family"
   - assertable

See also: affirm, possible

• third trimester
• third ventricle
• Third World
• third-class mail
• third-degree burn
• third-dimensional
• third-dimensionality
• third-place finish
• third-rate
• third-rater
• third-year
• thirdhand
• thirdly
• thirst
• thirst for knowledge
• thirster
• thirstily
• thirstiness
• thirsty
• thirteen
• thirteenth
• thirties
• thirtieth
• thirty
• Thirty Years' War