solemnly
adverb5 collocationsAvg. frequency: 7.1
To make a formal and serious vow, often in a legal context.
To make a serious and formal promise.
To state something formally and with great seriousness.
solemnly say6.8
To speak words in a grave and serious tone.
solemnly nod5.5
To move one's head down and up as a sign of agreement or understanding in a serious context.