It is northern Chinese dialect for "trustworthy", "reliable", etc. It stems from the word, 離譜 which means ludicrous.

It normally means 'reasonable'.

reasonable,reliable or helpful

一般形容一件事情的可行度（可执行度）或可信度 也可以形容一个人是否值得信赖 靠谱是北方方言，是可靠,值得相信的意思

知道了，那下面的朋友们都说对的。那怎么能选最好的回答的人？呵呵