Presupposition is an assumption that the speaker has before he produces an utterance. The
presupposition is recognized and understood by the triggers of the lexicons used in the
utterance. The triggers are different based on the speaker. According to Yule (1996), speaker
could have six types of presupposition in his utterance. They are 1) factive; 2) lexical; 3)
existential; 4) structural; 5) non-factive; dan 6) counter factual. Every type of the
presupposition has its own lexicon triggers. This research is aimed to find the uniqueness of the
lexicon triggers of the six types of presupposition in three subdialecs of Javanese language:
Purwokerto, Banten Utara, and Rembang. The data is taken from three informants as the native
speakers of the three subdialects. The three informants are asked to produce utterances based
on the same context given. From the utterances, using the descriptive-qualitative method, the
uniqueness is found as follows. In the same presupposition type, it is found 1) the same lexicons
with pronunciation variations, word’s reduction, and particle’s addition, 2) the lexicons from
the same base uttered in the different word class, 3) the different lexicons uttered in the different
word class
