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Definitions

well-defined

[wel-di-fahynd] / ˈwɛl dɪˈfaɪnd /
ADJECTIVE
clear
Synonyms
STRONGEST
clear-cut distinct explicit precise straightforward transparent unambiguous
WEAK
apparent audible comprehensible graspable intelligible legible lucent lucid obvious plain sharp spelled out unblurred understandable well-marked
Antonyms
STRONGEST
ambiguous fuzzy indefinite obscure questionable vague

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Even so, the crater remains clear and well defined.

From Science Daily • Nov. 14, 2025

Splayed out like Wile E. Coyote smashed into a wall, the “rat splat” is incredibly well defined and prompts many puzzling questions for a viewer: How did this get here?

From Slate • Feb. 11, 2024

It’s not just that we don’t know where the atom is when it’s in this state, but that its position is technically not well defined — it’s neither here nor there.

From Salon • Jan. 30, 2024

To meet them, the agreement includes 169 specific targets, but skeptics have long contended that many are not well defined, measurable, and scientifically rigorous.

From Science Magazine • Sep. 13, 2023

By the turn of the century the fringes of the continent were fairly well defined on the charts, but the interior was still an unknown wasteland of ice.

From "Shipwreck at the Bottom of the World" by Jennifer Armstrong