adj.
  - producing or capable of producing much noise.
 - strong in expression:
 loud protests.
 ▸obtrusive; gaudy.
 
adv.
 with a great deal of volume.
 
  Phrase
  
  Derivative
  
    - louden v.
  - loudly adv.
  - loudness n.
 
   
  Etymology
  OE hlūd, of W. Gmc origin; from an Indo-Eur. root meaning ‘hear’.