1. In a grave and sober manner
   - gravely, soberly

See also: staid

• factor of safety
• factor out
• factor V
• factor VII
• factor VIII
• factor X
• factor XI
• factor XII
• factor XIII
• factorage
• factorial
• factoring
• factorisation
• factorise
• factorization
• factorize
• factory
• factory farm
• factory price
• factory ship
• factory whistle
• factory worker
• factory-made
• factotum
• facts of life