1. In an undertone
   "he uttered a curse sotto voce"
   - in a low voice

Encyclopedia: Sotto voce

• present progressive tense
• present tense
• present times
• present-day
• presentable
• presentably
• presentation
• presentational
• presentative
• presentee
• presenteeism
• presenter
• presentient
• presentiment
• presentism
• presentist
• presently
• presentment
• presentness
• preservable
• preservation
• preservationist
• preservative
• preserve
• preserved