adj basic, chief, essential, fundamental, key, main, predominant, primary, principal
English Collins Dictionary - English synonyms & Thesaurus
staple ( staples plural & 3rd person present) ( stapling present participle) ( stapled past tense & past participle )
1 adj A staple food, product, or activity is one that is basic and important in people's everyday lives.
The Chinese also eat a type of pasta as part of their staple diet..., Staple goods are disappearing from the shops.
Staple is also a noun., n-count
Fish is a staple in the diet of many Africans.
2 n-count A staple is something that forms an important part of something else.
usu N of n
Political reporting has become a staple of American journalism.
3 n-count Staples are small pieces of bent wire that are used mainly for holding sheets of paper together firmly. You put the staples into the paper using a device called a stapler.
4 verb If you staple something, you fasten it to something else or fix it in place using staples. Staple some sheets of paper together into a book. V n with adv ...polythene bags stapled to an illustrated card. V-ed
staple gun ( staple guns plural ) A staple gun is a small machine used for forcing staples into wood or brick. n-count
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