The phrase "an ambiguous answer" is correct and usable in written English.
It can be used when describing a response that is unclear or open to multiple interpretations.
Example: "When asked about the project's timeline, she gave an ambiguous answer that left everyone confused."
Alternatives: "a vague response" or "an unclear reply".
The court had been widely expected to give an ambiguous answer.
For right now, it is probably best to treat the question of whether a majority of Americans support same-sex marriage as having an ambiguous answer.
So a question clearly about Wales got an ambiguous answer.
We have explored this notion by considering a set of relatively controlled and simplified systems driven by competition: Human sports and games, where the rules of engagement and measures of performance are well defined, in contrast to, say, the ranking of physicists (the question of whom is the 'best' physicist would have an ambiguous answer, to say the least).
Ciaran Hinds, who plays Mance, gave Entertainment Weekly an ambiguous answer.
Removal of either Lipotyphyla or †Creodonta alone does not result in a repositioning of †Mesonychia within Artiodactyla, but deletion of both Lipotyphla and †Creodonta gives an ambiguous answer.
During each meeting, scoring was done by one researcher and any ambiguous answers were discussed directly.
He gave me a funny smile, and he said, "I think they're portraits, don't you?" It was an interesting, ambiguous answer — as though he didn't distinguish between people and things.
"Brotherhood of man," he said — a slightly ambiguous answer, because that was the name of a British group that entered, and won, the contest in 1976.
There is sweat and movement as the New Yorker Andy Butler's dance outfit percolate through restyles of house and disco, a more sexually ambiguous answer to LCD Soundsystem.
Following the scanning session, participants were asked whether they had fallen asleep during the scan; those who provided a positive or ambiguous answer were excluded from the study.
