Echo answerwikipedia
In linguistics, an echo answer or echo response is a way of answering a polar question without using words for yes and no.
echo answerecho responserepeats the verb used in the question

Yes and no

yes and nonoyes
In linguistics, an echo answer or echo response is a way of answering a polar question without using words for yes and no.
(This is an echo response.) The answer to "Tuletteko kaupungista?"

Yes–no question

yes-no questionyes–no questionyes/no question
In linguistics, an echo answer or echo response is a way of answering a polar question without using words for yes and no. The Finnish language is one language that employs echo answers in response to yes-no questions.
The resulting response is usually an echo response.

A-not-A question

A-not-A
Often, yes-no questions in Mandarin are expressed in the A-not-A form, and are answered with either A or not-A.
The response to this question must be an echo answer, stating either "I am happy," or the correct alternative, "I am sad".

Hiberno-English

IrishIrelandIrish accent
(In Hiberno-English, it is the auxiliary that is echoed: the English question "Will you come?"
Irish lacks words that directly translate as "yes" or "no", and instead repeats the verb used in the question, negated if necessary, to answer.

Linguistics

linguisticslinguistlinguistic
In linguistics, an echo answer or echo response is a way of answering a polar question without using words for yes and no.

Truth value

truth valuetruth-valuelogical value
The verb used in the question is simply echoed in the answer, negated if the answer has a negative truth-value.

Finnish language

FinnishFinnish-languagefin
The Finnish language is one language that employs echo answers in response to yes-no questions.

Adverb

adverbadverbsadv.
It does not answer them with either adverbs or interjections.

Interjection

interjectioninterjectionsexclamation
It does not answer them with either adverbs or interjections.

Finnish grammar

Finnishinflected pluralthird infinitive
Negative answers use the negative verb en in coordination with the infinitive.

Celtic languages

CelticCeltic languageCeltic word
The Celtic languages also primarily employ echo answers.

Irish language

IrishGaelicIrish Gaelic
Irish and Scottish Gaelic lack the words "yes" and "no" altogether.

Scottish Gaelic

GaelicScottish GaelicScottish
Irish and Scottish Gaelic lack the words "yes" and "no" altogether.

Welsh language

WelshWelsh-languageWelsh-speaking
In Welsh, the words for "yes" and "no" ("ie" and "nage") are restricted to specialized circumstances.

Ie

iei.e.
In Welsh, the words for "yes" and "no" ("ie" and "nage") are restricted to specialized circumstances.

Nage

nage
In Welsh, the words for "yes" and "no" ("ie" and "nage") are restricted to specialized circumstances.

Nag

nag
In general, the negative answer is the positive answer combined with "nag".

Latin

LatinLat.Latin language
Latin, which has no single words for "yes" and "no", also employs echo answers:

Portuguese language

PortuguesePortuguese-languageBrazilian Portuguese
The Portuguese language is the only major Romance language to use echo answers often even though it has words for "yes" and "no" proper (sim and não respectively) as well.

Varieties of Chinese

varieties of ChineseChineseSinitic
The Chinese languages often employs echo answers.