According to new research, women are turned on by men who mumble as they see it as macho.
However, men are said to like refined tones in the opposite sex because it indicates femininity.
Brit actor Tom Hardy got complaints from viewers for “incoherent mumbling” during 2017 BBC thriller Taboo.
However a US team claims to have found out that women actually like men to speak slightly unintelligibly.
Study leader Dr Daniel Stehr, from the University of California, said: “From a sexual selection standpoint, males with traits that are slightly more masculine than average are typically preferred.
“In this context it would make males with less clear speech more attractive.”
The study saw 42 volunteers recorded after being asked to perform various speech tasks and then their vocals were then ranked for attractiveness.
Researchers found that clear speech tones were deemed much more appealing in females than males.
Dr Stehr said his team’s findings contradict popular belief.
He added: “Much received wisdom and many vocal coaches would encourage people to slow down and carefully enunciate to make a better impression on their audience.”
Many male actors have been noted for their unintelligible speech in the past.
Marlon Brando got given the nickname “Mumbles” by his 1955 Guys and Dolls co-star Frank Sinatra.
Oscar-winner Brando admitted he put cotton wool in his mouth to make his dialogue less clear while playing Don Corleone in 1972’s The Godfather.
Meanwhile, viewers also struggled to understand the late Heath Ledger as the Joker as well as Christian Bale’s Batman in 2008’s The Dark Knight.
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