A diligent researcher records every observation meticulously, ensuring that no detail is overlooked in the study.
一位勤奋的研究者会一丝不苟地记录每一个观察结果，确保研究中不遗漏任何细节。
Which choice best defines “diligent”?
B — Hardworking, careful. “diligent” means hardworking, careful.
Which word means “hardworking, careful”?
A — diligent. “diligent” means hardworking, careful.
diligent — hardworking, careful. In Chinese: 勤奋的，用功的.
diligent is pronounced /ˈdɪlɪdʒənt/.
A diligent researcher records every observation meticulously, ensuring that no detail is overlooked in the study. (一位勤奋的研究者会一丝不苟地记录每一个观察结果，确保研究中不遗漏任何细节。)
industrious, assiduous, conscientious — all close in meaning to diligent (hardworking, careful).
negligent, lazy — each the opposite of diligent (hardworking, careful).
Yes. diligent is on the SAT Prep Easy list — mid-frequency academic words that do get tested. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
dili (day) + gent (do)