dumber , dumbest
If someone is dumb on a particular occasion, they cannot speak because they are angry, shocked, or surprised.
We were all struck dumb for a minute.
我们一时个个都哑口无言。
If you call a person dumb, you mean that they are stupid or foolish.
The questions were set up to make her look dumb.
这些问题是事先设计好来让她丢人现眼的。
If you say that something is dumb, you think that it is silly and annoying.
I came up with this dumb idea.
我想出了这个愚蠢的主意。
dumbs , dumbing , dumbed
dumb down
If you dumb down something, you make it easier for people to understand, especially if this spoils it.
This sounded like a case for dumbing down the magazine, which no one favoured.
这件事听起来是要让杂志更为大众化,但没人赞成。