Nothing.
It has to be made properly in order to do what it's supposed to do.
An antonym of "properly" is "improperly." While "properly" refers to doing something in a correct or acceptable manner, "improperly" indicates doing something in a way that is inappropriate or not suitable.
Of course you need to work hard to have something done properly and on time because when you are working hard it means you are giving your best so give all of your efforts to do something properly and on time.
it depends on what that something is something is made by doing something to make the something
malfunction is something that does not work properly.
Properly - to something in the correct way
Quoting something is not considered plagiarism as long as you properly cite the source.
The word "properly" is an adverb. It modifies verbs, adjectives, or other adverbs to indicate how something is done in a correct or appropriate manner.
One would properly use a pry bar by inserting the flattened edge as leverage against something. A pry bar is used for "prying" something open, or away from itself.
The definition of deform is something that hasn't been structured/developed properly.
There could be a number of reasons why your truck will not shift properly. There could be something wrong with your clutch or transmission.
you can't see something.......