The definition of the word softer is the comparative form of soft. Soft means yielding readily to touch or pressure. Soft also means easily penetrated, divided or changed in shape.
Perhaps the word "marginalize" fits this definition?
More limp or softer.
Anything that's softer than his teeth.
softer, softest
The Mohs scale definition of hardness is that a harder material has the ability to scratch a softer material. So (according to the Mohs definition) one material can scratch another one because it is harder.
The definition of something describes exactly what the word is and how the word can be used. You will also see synonyms for the word and if the word is a noun or adjective when viewing the definition.
The dictionary definition of a word
what is the definition of word-processing package
fabric softener  -nouna substance added to fabrics during laundering to make them puffier and softer.
a definition of a compound word is jack-ass.
The word that goes with that definition is "door."
The definition of the word cited is quote as evidence for or justification of an argument or statement. Another definition for the word cited is mention as an example.