uncontested
adj.describing a situation where only one person or group is involved, so there is no competition or disagreement.
adj.not disputed or challenged; lacking opposition or competition. Often describes elections, legal claims, or mathematical proofs.
“The election was uncontested because only one candidate ran.”
“The witness provided an uncontested statement that helped the police solve the case quickly.”
“In mathematics, an uncontested proof is one that has withstood rigorous peer review and is universally accepted as true by the academic community.”
“He has been replaced as prime minister by the former mayor of Greater Manchester Andy Burnham , who won the Labour leadership uncontested after a landslide byelection victory.”
From un- + contested.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.