damning
adjective
[ ˈdamɪŋ ]
• (of a circumstance or piece of evidence) strongly suggesting guilt or error.
• "I was innocent but the evidence was damning"
damn
verb
• (in Christian belief) be condemned by God to suffer eternal punishment in hell.
• "be forever damned with Lucifer"
Origin:
Middle English: from Old French dam(p)ner, from Latin dam(p)nare ‘inflict loss on’, from damnum ‘loss, damage’.