| an inoffensive or indirect expression that is substituted for one that is considered offensive or too harsh | action intended to nullify the effects of some previous action |
| | action intended to keep a country politically neutral or exclude it from a possible war |
| | (euphemism) the removal of a threat by killing or destroying it (especially in a covert operation or military operation) |
| | a chemical reaction in which an acid and a base interact with the formation of a salt; with strong acids and bases the essential reaction is the combination of hydrogen ions with hydroxyl ions to form water |