I understand that the word "supposably" is often used incorrectly but what does this word really mean? And how to us it correctly in a sentence?
If anyone can provide an example, I'd be very grateful.
It means 'possible to be supposed'. Although this word could, in theory, be used in a sentence, in practice there is never any need to use it. You can forget about it.
The point about this almost non-existent word is that people sometimes use it when they should be using 'supposedly'.
Supposably is a bastardization of supposedly. Please don't use it, unless you are joking around, and want to sound dumb. Some other dumb sounding expressions:
I want to axe you sumpthin.
I could care less.
Go to the libary.
possible to be supposed = supposable, not supposably
From the net...
Supposably is a word in the American language that is often wrongly confused with the word 'supposedly'. Although the vast majority of people that use 'supposably' mistake it as a substitute for 'supposedly', it does actually have a valid use. The general rule is this: 'Supposably' can be used only when the meaning is 'capable of being supposed,' and then only in the U.S
In Merriam Webster dictionary is gives the definition of supposable, an adjective and lists supposably as an adverb form of that word.