tacky1
  
  adj.
 (tackier, tackiest)
 (of glue, paint, etc.) slightly sticky because not fully dry.
Derivative
  
 
  
    
tacky2
  
  adj.
 (tackier, tackiest)
 informal showing poor taste and quality.
Derivative
  
    - tackily adv.
- tackiness n.
 
  Etymology
  C19 (denoting a horse of little value): of unknown origin.