初悉 is a formal, literary verb meaning 'to just learn' or 'to become newly acquainted with' something — typically knowledge, a skill, a situation, or a person. The character 初 (chū) means 'beginning' or 'first', and 悉 (xī) means 'to know thoroughly' or 'to be familiar with'. Together, they convey the idea of entering the initial stage of familiarity — not yet mastery, but the very first grasp of something new. It emphasizes the freshness and novelty of the learning moment.

This term appears frequently in written Chinese — such as official notices, academic reports, or reflective essays — but is rare in casual speech, where learners would use simpler expressions like 刚知道 (gāng zhīdào) or 开始了解 (kāishǐ liǎojiě). It carries a modest, respectful tone and often implies humility: the speaker acknowledges their limited but genuine first understanding.