Correct spelling, explanation: the root of the word upholstery is another English word, namely, upholder. It was a skilled person whose job was to make special clothing for furniture. The word upholder appeared for the first time in Middle English and later upholstery entered the language, too.

Definition of upholstery:
1. noun – it refers to an activity of upholstering things, such as furniture, or to a type of cloth that covers different pieces of furniture.
He is into DIY and especially into upholstery – he renovated all the pieces of furniture in their house.
The upholstery of this old armchair is a true masterpiece.

Other words connected with upholstery:
Words that are connected with upholstery are:
1. upholsterer – a person who deals with upholstery;
He is a really skillful upholsterer and every time I want to refresh my furniture, I contact him.
upholster – an activity of upholstering things;
Instead of buying a new sofa, we can just upholster it, which will be much cheaper.

Incorrect spelling, explanation: many users of English believe that the word upholstery lacks the -e letter in the last syllable. That results in a popular spelling mistake, which is upholstry. That form is wrong, though, as it is true that when we pronounce the word, the -e letter is barely recognizable, but it appears in writing. Thus, the only correct version is to spell the word upholstery.

Incorrect spelling

Incorrect spelling