 Searle (1975) criticizes Austin’s taxonomy on two central grounds. First, Austin’s methodology is unduly lexicographic, assuming that we can learn about the range and limits of illocutionary acts by studying illocutionary verbs in English or other natural languages. However, Searle observes, nothing rules out the possibility of there being illocutionary acts that are not named by a verb either in a particular language such as Swahili or Bengali, or indeed in any language at all; similarly, two non-synonymous illocutionary verbs may yet name one and the same illocutionary act.