incautious

1. ADJ If you say that someone is incautious, you are criticizing them because they do or say something without thinking or planning. 粗心大意的; 不经考虑的[正式] [usu ADJ n]

2. incautiouslyADV

Incautiously, Crook had asked where she was. 克鲁克漫不经心地询问了她在哪儿。