mainstay
🇺🇸
/ˈmeɪnsteɪ/
🇬🇧
/ˈmeɪnsteɪ/
noun
R
The most important part of something that helps it exist or be successful.
Math is a mainstay of the school curriculum.
translation
The most important part of something that helps it exist or be successful.
Word Forms
Plural
mainstays