1. able to be endured or tolerated
2. able to be supported or defended with evidence or reasoning

Examples

• The heat was barely supportable without air conditioning.
• His theory is supportable with solid scientific evidence.
• The working conditions were supportable, though not ideal.
• Her argument is supportable by multiple sources.
• The pain became supportable after taking medication.
• The claim is supportable through careful analysis.
• Living in the small apartment was supportable for a few months.