Sentence:  Then we relapsed into a discomfited silence, and wished we were anywhere else. But Miss Thorn relieved the situation by laughing aloud, and with such a hearty enjoyment that instead of getting angry and <WSD>more</WSD> mortified we began to laugh ourselves, and instantly felt better. 
Meaning of the word marked with <WSD> tags:  (used to form the comparative) Used alone to form the comparative form of adjectives and adverbs. (from 13thc.)