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serious
mastery UK /ˈsɪə̯.ɹi.əs/ US /ˈsɪɚ.i.əs/adjadv
card 1 of 10 · synonym
Which word is closest in meaning to 'serious' in this sentence?
When the teacher walked in, the students turned serious and put away their phones.
card 1 of 10 · synonym
Which word is closest in meaning to 'serious' in this sentence?
When the teacher walked in, the students turned serious and put away their phones.