The antonyms for the word "more tilting" can include "flat," "level," "horizontal," "plumb," and "straight." These alternatives convey the opposite meanings of the word "tilting," which indicates a leaning or slanting position. The choice of an antonym depends on the context and purpose of the communication. For instance, if discussing the stability of a structure or object, the antonym "level" or "plumb" may be more suitable. On the other hand, if describing the aesthetic appeal of a painting or sculpture, the antonym "straight" or "horizontal" may be more appropriate. Overall, the use of antonyms can enhance clarity and precision in language use.