adverb

solemnly

solemnly, seriously, gravely

They solemnly promised to tell the truth.

They solemnly promised to tell the truth.

The judge looked at him solemnly.

The judge looked at him solemnly.

to ((verb)) solemnly to do (sth.) in a serious manner They solemnly promised to tell the truth.

Synonyms: seriously, gravely, earnestly; Antonyms: frivolously, lightly

From the adjective 'solemn' + the adverb-forming suffix '-ly'. 'Solemn' comes from Latin 'solemnis'.

Describes an action done in a 'solemn' way. If you promise something 'solemnly', you are very serious about it.

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