It is easy to blurt out a swear word at an inappropriate time, or to bark out a tactless or tasteless remark before you have a chance to consider the impact.

谩骂之词，很容易在不是时候的时候脱口而出，或者在你有机会考虑其影响之前，轻易地给出不老练、没趣味的评论。

youdao

Their food — heavily processed, dry and tasteless — left a lot to be desired.

他们的食物，加工的痕迹太严重，既干燥又无味，没人愿意吃。

youdao

Of course its a tasteless fizzy lager - although quite strong, but nethertheless it is not seen as just a male orientated drink.

虽然不尝试喝啤酒的女人很多，但不管怎样不能把它仅仅看作一种起源于男性的饮料。

youdao

Just as negative opinion could spread because of a tasteless costume, positive opinion can grow because you can demonstrate wit and creativity.

FORBES: Dress Codes And Halloween Costumes

That was the bitter icing of a tasteless cake for Sunderland, who also lost three players during the match because of injuries.

BBC: Sunderland 0-2 Liverpool

Several municipal workers in full Nazi uniform, one of them with an Adolf Hitler moustache, drove a jeep flying swastika flags through a central boulevard as a tasteless reminder of the German occupation of Athens in the second world war.

ECONOMIST: Greece and Germany