Which part of speech is the underlined word in the following sentence? Did you ever try to find out?

In the sentence 'Did you ever try to find out?', the word 'ever' modifies the verb 'try' by indicating time/frequency (at any time). Words that modify verbs are adverbs. 'Ever' is a classic adverb of time/frequency, expressing 'at any point in time.' It is not describing a noun (adjective), replacing a noun (pronoun), or showing action (verb).