To be destroyed together with someone, to share in another's ruin. Hebrews 11:31 notes that Rahab the prostitute 'did not perish with those who were disobedient' when Jericho fell—her faith saved her from the destruction that consumed her fellow citizens. The word emphasizes shared fate: she could have died with the rest, but faith separated her from their doom. The prefix 'together with' underscores how close she came to judgment and how her faith created a decisive difference. Her salvation was both physical (spared in conquest) and spiritual (counted among the faithful).