打击
dǎjí · HSK 5
to hit; to strike
👊 打 = hit/strike + 击 = strike/attack; doubled verb means a forceful blow
打 (dǎ) means to hit and 击 (jí) also means to strike, so 打击 stacks two strike-verbs for emphasis. The compound covers physical blows and the figurative sense of a setback that knocks someone back.
打 — hand radical 扌 + nail 丁
打 combines the hand radical 扌 (action with the hand) with 丁 (originally a nail), suggesting striking or hitting with the hand. 丁 also serves as a phonetic hint in older readings. The meaning broadened from 'to strike' to a general verb for many hand-based actions, like 打电话 'make a phone call'.