It comes from the Old English word 'eldra', which could be considered the comparative of 'eld', an obsolete English word meaning one's age.
Comparative: older Superlative: oldest
This is a very badly worded question. If you mean "Is the word 'elder' a superlative?", the answer is "No, it is a comparative". If you mean something else, please reword the question to make your meaning clear.
The word "elder" can function as both a noun and an adjective. As a noun, it refers to someone who is older in age or has more experience. As an adjective, it describes someone or something that is older or more experienced.
"Litter" is a noun and a verb and, as such, does not have a comparative degree.
A comparative for the word ineffectual is more ineffectual.
smoother is comparative of word smooth.
comparative
Sharper is the comparative form of the word sharp.
comparative
comparative
There is no special English word for elder sister.
What's the comparative and superlative of the word "exact"