serene¹ /sə-rēnˈ/

1. Calm
2. Unclouded
3. Unruffled
4. (with cap) an adjunct to the titles of members of some European royal families (translating Ger Durchlaucht Serenity)

1. Calm brightness
2. Serenity
3. Serene sky or sea
4. Pure air

1. To tranquillize
2. To clear

serēneˈly adverb

• what's biting you
• what's cooking
• what's eating you
• what's-her-name
• what's-his-
• what's-his-name
• whatsis
• whatsit
• whatsits
• what's-its-name
• whatsits-name
• what's more
• what's new
• whatso
• whatsoe'er
• whatsoever
• whatsomever
• what's the big idea
• what's the damage
• what's the odds
• what's to do
• what's up
• what's up with you
• what's what
• what's with