The historian would mutter to himself while reading old manuscripts, puzzling over faded ink and ambiguous phrases.
历史学家在阅读古老手稿时会自言自语地嘀咕，对褪色的墨迹和含糊的措辞感到困惑。
Which choice best defines “mutter”?
D — Speak quietly, mumble. “mutter” means speak quietly, mumble.
Which word means “speak quietly, mumble”?
C — mutter. “mutter” means speak quietly, mumble.
mutter — speak quietly, mumble. In Chinese: 嘀咕，咕哝.
mutter is pronounced /ˈmʌtər/.
The historian would mutter to himself while reading old manuscripts, puzzling over faded ink and ambiguous phrases. (历史学家在阅读古老手稿时会自言自语地嘀咕，对褪色的墨迹和含糊的措辞感到困惑。)
mumble, whisper, murmur — all close in meaning to mutter (speak quietly, mumble).
shout, proclaim — each the opposite of mutter (speak quietly, mumble).
Yes. mutter is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. 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.
mutter(whisper)