IPA: /ˌpriːpəˈzɪtɪvli/
KK: /prɪˈpɒzɪtɪvli/
In a position before something else, especially in grammar where a word or phrase comes before another word it modifies.
In the sentence 'The big dog barked', the adjective 'big' is used prepositively before the noun 'dog'.
Prepositively → It is formed from "pre-" (meaning before) and "positus" (from the verb "ponere", meaning to place). The word refers to something that is placed or positioned before something else.
Think of something being 'placed before' — 'pre-' means before, and 'positus' relates to placing.