boffo
adjective
[ ˈbɒfəʊ ]
• (of a theatrical production or film, or a review of one) very successful or wholeheartedly commendatory.
• "a boffo box office certainty"
• (of a laugh) deep and unrestrained.
• "I'm not going for the big boffo laughs"
boffo
noun
• a success.
• "the finale is a genuine boffo"
Origin:
1930s (in sense ‘a joke or punchline’): perhaps imitative.