Ill-founded

Sorry to say, that expectation was ill-founded.

ill-founded criticism

He said, the part of the sentence which stated that the court “having heard the evidence, and maturely and seriously considered the whole, are of opinion that the charge is malicious and ill-founded: […]”

Optimism rose to a third peak in 1846, when the eagerness of investors to take up shares in new companies precipitated a financial panic in which many ill-founded schemes perished.

In fact, for all of Morgan’s game dopiness and genius timing, the biggest laugh might come from famed particle physicist Brian Cox, who—after having to listen to yet another misguided and meandering anecdote about Cunk’s mate Paul, an ill-informed fount of knowledge for our title star—finally asks: “So what does Paul do?”