个人 (gè rén) literally combines 个 (gè), a common measure word meaning 'a' or 'one', and 人 (rén), meaning 'person'. Together, it means 'individual'—emphasizing a single person as distinct from a group—and 'personal', referring to matters belonging to or concerning oneself. It’s frequently used in formal and neutral contexts, such as official documents, workplace communication, or daily conversation about rights, responsibilities, or preferences.

The word functions flexibly: as a noun ('every individual'), it often appears with quantifiers like 每 (měi, 'each') or 一 (yī, 'a'); as an adjective ('personal'), it modifies nouns directly (e.g., 个人意见, 'personal opinion'). Unlike the more colloquial 我自己 (wǒ zìjǐ, 'myself'), 个人 carries a slightly formal or institutional tone and is rarely used in intimate or emotional expressions.