"Tennis is tiring."

Translation: テニスは疲れます。

[Readergirl52]

I've only ever used つかれる as つかれた so that's good to remember, that it's actually a verb that can used like this

[EquanimousLingo]

When the verb is used in its infinitive form, it may represent habitual action, a fact or a future tense. In this case, the speaker is stating the opinion about tennis as this thing that always makes one tired.

[testmoogle]

つかれる (疲れる) is a finite form of the verb. Did you mean to say a different word than "infinitive"? Usually つかれ (疲れ) would be the form of the verb which might get called "infinitive". ^^

[hippietrail]

https://en.wikiversity.org/wiki/Beginner_Japanese/Godan_Verbs#Infinitive

[azureviolin]

テニスは疲れます。

[Fayke]

Would:
テニスをするのはつかれる。
be correct?

[KeithWong9]

It is like "playing tennis is tiring." It is correct but you are using more words for the same meaning.

[EricPooley]

Without するのが doesn't it mean tennis itself is tiring. I mean, I find it a boring sport, so it would be true for me.

[LawrenceCh633799]

Is 疲れている ok?

[KeithWong9]

no. 疲れている=疲れた describe the state of tiredness. 疲れる is to make someone tired

[Tim613889]

Tsukareru means to get tired. Literal translation is something like "when it comes to tennis, I get tired".

[philallthethings]

疲れている works if your friend's name is Tennis and he's exhausted lol

[GgsongSong]

Is が okay in this sentence instead of は? not accepted

[KeithWong9]

No, が is not appropriate. By looking at the English translation, one may think that tennis is the subject of the Japanese sentence, however it is not. The subject is "I" and tennis is just a topic.

疲れる translates to "tired," never "tiring." The full sentence is 私はテニスをすると疲れます "I get tired when playing tennis." This is called a Konjac sentence こんにゃく文 which is described here => https://www.japanallover.com/2017/07/unagi-and-konnyaku-sentences-in-japanese/