A competing theory of meaning is true. 1
Verificationism is self-refuting. (After all, the statement that “only observation-affecting statements are meaningful”, is not an observation-affecting statement).1 This is relevant because self-refuting statements are false.
Universal generalizations (i.e. inferences to natural laws) cannot be verified by experience.1 (For example, no matter how many ravens are observed to be black, one cannot thereby confirm that all ravens are black. The same goes for the exemplification of laws like gravity.) This is relevant because universal generalizations, like “all ravens are black,” are perfectly meaningful.
Truths about logic and math are neither true-by-definition nor empirically verifiable.1 This is relevant because truths of logic and math are meaningful.