(bound form) used as a suffix for certain adjectives or adverbs to emphasize a state or feeling; for example in 几乎 jī​hū or 似乎 sì​hū

(classical) used after a verb or adjective to indicate location, time, or comparison; similar to 于 yú

(classical) used at the end of a sentence to express interrogation, doubt, surmise, or exclamation; similar to 吗 ma or 啊 a

(classical) used within a sentence to indicate a pause or after a name as a vocative marker to call someone

sound of laughter; ha