English translation of '没谱儿'

动

1. (= 心里没数) not have a clue
   ⇒ 论文怎么写,他根本没谱儿。 (Lùnwén zěnme xiě, tā gēnběn méipǔr.) He doesn't have a clue how to write his thesis.
2. (= 没准儿) be unreliable
   ⇒ 不要听他的,他说话没谱儿。 (Bùyào tīng tā de, tā shuōhuà méipǔr.) Don't listen to him — he's a loose cannon.