Defence is one of the most commonly used words in the English language, and it is used to describe a variety of things. If you're looking for synonyms for the word defence, then you've come to the right place. Some of the most common synonyms for defence are protection, shield, security, cover, and safety. Other synonyms can include resistance, safeguard, barricade, fortification, and shelter. Each of these synonyms has a slightly different connotation, but they can all be used to describe the act of defending or protecting something or someone. Whether you're writing a report, giving a speech, or simply trying to expand your vocabulary, using synonyms for defence can make your writing more varied and interesting.