Adverb
in an unconvincing manner
Source: WordNetIt is true that most religions which have been offered me teach immortality, but note the fashion in which they teach it. The surest way to lie convincingly is to tell the truth unconvincingly. They did not wish me to believe. Robert A. Heinlein
he argued unconvincingly Source: Internet
Although the techniques originally used were distinctly amateurish – British agents would often pose unconvincingly as botanists or archaeologists – more professional tactics and systems were slowly put in place. Source: Internet
• Brazil unconvincingly beat Venezuela 1-0 at home, but that was enough to take the lead in World Cup qualifying with nine points from three matches. Source: Internet
He batted unconvincingly and reached 28 when he hit a ball to Jack Ikin ; England believed it was a catch, but Bradman stood his ground, believing it to be a bump ball. Source: Internet
She shakes and shimmies as a smarmy male singer, while bikini-clad babes dance behind her or unconvincingly “play” instruments. Source: Internet