Adequate hydration is vital for maintaining cognitive function during prolonged intellectual work.
充足的水分对于在长时间脑力劳动中保持认知功能至关重要。
Which choice best defines “vital”?
C — Very important, essential. “vital” means very important, essential.
Which word means “very important, essential”?
A — vital. “vital” means very important, essential.
vital — very important, essential. In Chinese: 极其重要的，必不可少的.
vital is pronounced /ˈvaɪtl/.
Adequate hydration is vital for maintaining cognitive function during prolonged intellectual work. (充足的水分对于在长时间脑力劳动中保持认知功能至关重要。)
essential, crucial, indispensable — all close in meaning to vital (very important, essential).
unnecessary, trivial — each the opposite of vital (very important, essential).
Yes. vital 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.
vita(life)+l