If you quell an unpleasant feeling such as fear or anger, you stop yourself or other people from having that feeling. The Information Minister is trying to quell fears of a looming oil crisis
queller
الواصلة
quell·er
النطق
علم أصول الكلمات
[ 'kwel ] (transitive verb.) 13th century. Middle English, to kill, quell, from Old English cwellan to kill; akin to Old High German quellen to torture, kill, quAla torment, Lithuanian gelti to hurt.