CARELESScareless about what you say or do, especially by talking about things which should be kept secret 〔说话、行事〕轻率的,不慎重的〔尤指泄露机密〕OPP discreet
It was very indiscreet of Colin to tell them about our plan.
科林把我们的计划告诉了他们,太不谨慎了。
Examples from the Corpus
indiscreet• I wouldn't trust him with anything personal - he can be very indiscreet.• Eleanor, on the other hand, was said to be beautiful and lively; she was certainly headstrong and indiscreet.• Last July, in peak form, pirouetting on his toes and gesticulating wildly, he was wickedly funny and amazingly indiscreet.• Zsa Zsa was enchanting - whatever I said to her, she'd just giggle and become even more indiscreet.• This was no hardship, for he was marvellously outspoken and indiscreet about many things.• Her mum would never had done anything so untidy or indiscreet, and she'd been a Tory all her life.• Rosa was embarrassed: it was remarkably indiscreetbehaviour with his wife and daughter present.• They have a tendency to be a bit too loud, too indiscreet, for certain company.• I did hear them talking about sales figures but it would be indiscreet of me to say any more.