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essential
/ɪˈsɛn.ʃəl/
Describes something that cannot be removed without destroying the integrity or viability of the whole. It suggests a non-negotiable requirement rather than just a high priority. When used to describe nature or character, it points to the 'essence'—the irreducible core that makes a thing what it is. This distinguishes it from 'important,' which describes value, whereas 'essential' describes identity and necessity. In modern casual usage as a noun, it refers to basic survival or comfort items (e.g., travel essentials), shifting the focus from abstract philosophy to practical utility.
💬Casual Conversation
Need those mockups by 5. They're absolutely essential for the pitch.
I'm swamped. Can it wait until tomorrow?
Meanings
Absolutely necessary; extremely important.
"Fresh water is essential for the survival of any living organism."
Of the nature of the essence of a thing; fundamental.
"The essential difference between the two theories lies in their approach to causality."
A fundamental attribute or quality; an indispensable item.
"Sunscreen and a hat are summer essentials for anyone visiting the beach."