懷疑 的英文怎麼說?

[1] dubious[2] doubtful[3] find something doubtful[4] find something questionable[5] not fully believe somebody[6] not always trust somebody[7] take somebody/something with a grain of salt

dubious about something = doubtful about something = 對某事半信半疑，不完全相信

dubious about something 有另一個意思，就是對某事的效果或某特質保持狐疑的態度，例如:

dubious about the efficacy of the drug = 對某藥物的效用感到狐疑，也就是不完全相信此藥物一定有效，這裡所說的「半信半疑」是對某事有信心的意思

I find it doubtful = 我對某事保持半信半疑的態度
I take her with a grain of salt = 我對她說的話半信半疑
I do not fully trust her = 我對她說的話半信半疑

大部分情況用 believe 或 trust 就可以了，而 take somebody/something with a grain of salt 意思是對某事或某人保持半信半疑的態度