arrant
adjective /ˈærənt/
  /ˈærənt/
[only before noun] (old-fashioned)- used to emphasize how bad something/somebody is- arrant nonsense
 Oxford Collocations DictionaryArrant is used with these nouns:- nonsense
 Word OriginMiddle English: variant of errant, originally in phrases such as arrant thief (‘outlawed, roving thief’).