What does "solemnize" mean?

To make solemn, or official, through ceremony or legal act.

Solemnize

Common synonyms include: administer communion, attend communion, attend mass, beat the drum, bless, blow the trumpet.

verb

verb ·Uncommon ·Advanced level

Verb

1
To make solemn, or official, through ceremony or legal act. US, transitive
"The couple chose to solemnize their relationship in a secular ceremony, instead of having a wedding."
2
make solemn and grave wordnet
3
To make grave, serious, and reverential.
"September 27, 1873, John Campbell Shairp, "Wordsworth's Three Yarrows", in Every Saturday Wordsworth was solemnized and elevated by this his first look on Yarrow."
4
perform (the wedding ceremony) with proper ceremonies wordnet
5
observe or perform with dignity or gravity wordnet

"The couple chose to solemnize their relationship in a secular ceremony, instead of having a wedding."

From Middle English solempnisen, from Old French solemnisier, from Medieval Latin solemnizare, from Latin solemnis.