The word "ex tensile" refers to something that is capable of being stretched or extended. Its antonyms, on the other hand, would be words that describe the opposite quality - things that cannot be stretched, elongated, or expanded. Some antonyms for "ex tensile" include words such as inflexible, rigid, stiff, unyielding, and static. When something is inflexible or rigid, it is unable to bend or stretch, and when it is stiff, it may be hard to manipulate or alter. Unyielding and static both suggest that something is immovable or fixed in place, unable to be changed or extended. Understanding antonyms helps us to better understand the meaning and context of the words we use.