Does "delineate" also mean "describe"?

[Staro]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #81 "Learn English Vocabulary", question 8

You must choose the right description for each word and I would ......... this one as an adjective.

(a) delineate
(b) decipher
(c) decide
(d) define

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #81 "Learn English Vocabulary", answer 8

You must choose the right description for each word and I would define this one as an adjective.

Correct answer: (d) define

Your answer was: incorrect
You must choose the right description for each word and I would delineate this one as an adjective.
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Does "delineate" also mean "describe"?

Staro

[Mister Micawber]

'Delineate' can mean 'describe in detail' or 'describe vividly', but that is not appropriate in this case, which just requires the word 'adjective'.
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Native English teacher at Mister Micawber's