hold good (?.)

• afford proof of
• ascertain
• be consistent
• be demonstrable
• be irrefutable
• be logical
• be reasonable
• be the case
• be true
• be truthful
• bring home to
• cinch
• clinch
• conform to fact
• demonstrate
• determine
• establish
• figure
• fix
• follow
• follow from
• have a case
• hold
• hold together
• hold true
• hold up
• hold water
• make good
• make out
• make sense
• nail down
• prove
• prove out
• prove to be
• prove true
• remain valid
• remove all doubt
• set at rest
• settle
• settle the matter
• show
• stand the test
• stand to reason
• stand up
• stick together
• wash