solemn

 
Pronunciation: /ˈsɒləm/

adjective

  • 1formal and dignified: a solemn procession
  • not cheerful or smiling; serious: Tim looked very solemn
  • 2characterized by deep sincerity: he swore a solemn oath to keep faith

Derivatives

solemnly

adverb

solemnness

noun

Origin:

Middle English (in the sense 'associated with religious rites'): from Old French solemne, from Latin sollemnis 'customary, celebrated at a fixed date', from sollus 'entire'

Spelling help

Remember that solemn ends with -mn.