Here are 20 sure words that will turbo-charge the authority of your headlines, product names, buttons, and email subject lines ‚Ė∂ÔłŹ

Iron-clad
Proven 
Validate 
Authentic 
Genuine 
Bonafide 
Legitimate 
Official 
Research 
Studies 
Results 
Solution 
Honest 
Complete 
Psychological 
Comprehensive 
All-Inclusive 
Absolute 
Definitive 
Authoritative 

BONUS ūüí• 10 more powerful words ‚Ė∂ÔłŹ
Conclusive 
Authority 
Surefire 
Formula 
Strategy 
Expert 
Report 
Document 
Literally 
Powerful