The humor of my proposition appealed more strongly to Miss Trevor than I had looked for, and from that time forward she became her old self again; for, even after she had conquered her love for the Celebrity, the mortification of having been jilted by him remained.
to allow a right; to allow a claim; to allow the truth of a proposition
For such propositions unimaginability looks like a function of a kind of conceptual impossibility.
The proposition that "all dogs are mammals" implies that my dog is a mammal
Used in the Ending of Sentence
At some point in the conversation my name came up, and I readily agreed to their proposition.
Meaning of proposition for the defined word.
Grammatically, this word "proposition" is a noun, more specifically, a countable noun and a singularia tantum. It's also a verb, more specifically, a transitive verb.