Maybe

Part of speech: noun (n.)

Possibility; uncertainty. [R.] What they offer is mere maybe and shift. Creech.

Part of speech: adjective (a.)

Possible; probable, but not sure. [R.] Then add those maybe years thou hast to live. Driden.

Part of speech: adverb (adv.)

Perhaps; possibly; peradventure. Maybe the amorous count solicits her. Shak. In a liberal and, maybe, somewhat reckless way. Tylor.