"나를 속이지 마십시오."

Translation: Please do not deceive me.

[DustinStei1]

It should also be accepted as 'don't trick me'

[Ash-Fred]

"Don't trick me." is now accepted.

[tehjuneee]

"Don't fool me" should also be accepted.

[Ash-Fred]

"Don't fool me." is now accepted.

[Roman197381]

agreed.

[Straw_Neige]

Is "-지 마십시오" the same thing as "-지 마세요" but more formal?

[jackisback7]

Exactly. It's typically used nowadays in the service industry, like a hotel, airlines when speaking to a customer.

[coral997]

Some of these lessons make me kinda sad

[sakuyaluigi]

Why isn't there an option to add "please"?

[sparklebunny]

I think politeness ("please") is implied in the formality of the ending -십시오 please correct me if I'm mistaken!

[CooperReid4]

No you're good. Another way you could say it is "속여지마요" but remember this one is a little less polite

[Ash-Fred]

"속이지 마요."

[youngween]

So whenever "지 마요" is added, the verb must be in a stem word form right?

[Stella11209]

Because formality/politeness level can not be translated with the word "please". You have to see it just as a respectful word ending and not as a begging like "please" sounds

[hansi735272]

what does 마십시오 mean?

[V375981]

Please do not

[Tilsii]

Is the present tense of this verb 속이어요 or 속여요

[Buchukimchi]

The dictionary form is 속이다 and the present tense would be 속여요.

[daphne2011]

That's. Not nice

[giacomo-jimmy]

How would you say "I don't deceive?"

[RamyaBarat]

I think it's "저는 속이지 않습니다"

[nope413612]

look, duo, my pal, you deceived the boy so you deserve it

[MICHELLEWE333924]

MY JEANS DON'T FIT

[oee16]

What is the use of the suffix -이 (속이) in this case?
Is it a preservation of a (subject/object) marker or is it itself a stress particle?

[Ep35882]

-이 is a passive suffix (보다 to see -보이다 to be seen). 속다 means to be deceived.

[goohayoon]

Excuse me but what you said is wrong.
The verb in infinitive is:
속이다.
When you remove 다, the stem is 속이.

[Ep35882]

속이다 (the verb in this exercise) is formed from 속다 + passive suffix 이. They are separate but related verbs.

[oee16]

Most helpful. Thanks to you both. My confusion came from the fact that the so-called active verb 속다 has a "passive" interpretation in English, i.e. 속다 = get/be fooled (deceived).

Its passive-causative form (as Elise has pointed out) is 속이다, which means to get someone (be) fooled; hence, to fool someone, consequently adopts an active voice.

In this example, selma has correctly explained that the 속이 from 속이지 마다 is the infinitive of 속이다.

In short, you are both right. Thanks once more.

[goohayoon]

It's actually part of the verb.
The verb in infinitive is:
속이다.
When you remove 다, the stem is 속이.

[gayatri164097]

I don't know