Why is the suffix armless and legless not accepted in English?

You're right, the suffixes "-less" and "-armless" are not typically used together. There's a simple reason for this:

* Redundancy: "-less" already implies the absence of something. Adding "-armless" or "-legless" on top of it creates unnecessary repetition.

Here's an example:

* Incorrect: "He was an armless-less man."

* Correct: "He was an armless man."

Instead of using "-armless-less," simply use "armless" or "legless." This avoids the repetition and makes the phrase more concise and understandable.