Longman Dictionary of Contemporary English
ill-informed
adjective
COLLOCATIONS FROM OTHER ENTRIES
well-informed/ill-informed
▪ I became reasonably well-informed about the subject.
EXAMPLES FROM OTHER ENTRIES
▪ For someone who wants to be a journalist, she's remarkably ill-informed about current affairs.
▪ He's either a liar or he's incredibly ill-informed.
▪ Writers such as Oscar Wilde were the target of ill-informed and often hostile criticism simply because they were gay.
EXAMPLES FROM CORPUS
▪ All too often headmasters, teachers and parents are ill-informed about intended changes in primary curriculum programmes.
▪ By now, anyone ill-informed enough to imagine some elderly Miss Whiplash will have been put right.
▪ Either way the notion is both ill-informed and ridiculous and it comes from paying too much attention to newspapers like the Guardian.
▪ Most of the comments came from ill-informed spectators.
▪ Resistance, ill-organized, ill-informed and largely based on non-quantifiable attachment to place, has little effect.
▪ That means Pascoe and a few dozen other ill-informed hysterics.
▪ The ill-informed and uninvolved are easy victims to simplistic solutions.
▪ Without such a safeguard, a small group of ill-informed or zealous officers from either side could start a full-scale nuclear war.
Wiktionary
ill-informed
a. Poorly informed; ignorant.
Usage examples of "ill-informed".
Ill-informed, they had gone off on a wild-goose chase through gossip from a Cypriot waiter at the restaurant he regularly used.
Thereupon, many illiterate or ill-informed electors might think that they were convoked to vote solely on the Constitution and not at all on the decrees, which is just what happened, and especially in the remote departments, and in the rural assemblies.