kiriito de nendo wo kiru.

It is read:

きりいと で ねんど を きる。

In normal Japanese writing, it would usually appear without spaces:

切り糸で粘土を切る。

The spaces here are just to help learners see the parts more easily.

切り糸 is a noun meaning a cutting string/thread/wire, especially a string or wire used to slice something like clay.

It is made from:

• 切り = the stem of 切る (to cut)
• 糸 = thread/string

So the word literally has the sense of cutting thread/string.

で marks the means, method, or tool used to do an action.

So:

• 切り糸で = with a cutting wire/string
• using a cutting wire/string

This is a very common use of で.

Examples:

• はしで食べる = eat with chopsticks
• ペンで書く = write with a pen

を marks the direct object of the verb, meaning the thing that the action is done to.

Here:

• 粘土 = clay
• 粘土を切る = cut the clay

So を shows that clay is what gets cut.

Japanese sentences usually put the main verb at the end.

A very common basic pattern is:

[tool / place / time / object] + verb

So this sentence is structured like:

• 切り糸で = with a cutting wire
• 粘土を = the clay
• 切る = cut

That verb-final order is normal in Japanese, even though it feels different from English.

Because the sentence contains both:

• 切り糸 = a noun related to cutting
• 切る = the main verb to cut

So the first 切 is part of the name of the tool, and the second 切る is the actual action.

This is completely natural in Japanese. English can do something similar too, like:

• Cut the clay with a cutting wire.

切り糸 is a compound noun. Japanese often makes compound nouns by using the verb stem plus another noun.

So:

• 切る → stem 切り
• 切り + 糸 → 切り糸

This is different from 切る糸, which would sound like a relative clause, something more like the string that cuts or string to cut, depending on context. That is not the normal form for naming this kind of tool.

So 切り糸 is the natural noun form here.

Yes, 糸 literally means thread or string, but in real-life tool names, the exact English translation can depend on what the item is actually made of.

In a clay or pottery context, 切り糸 often refers to a thin line used to cut clay, which might be:

• string
• thread
• wire

So depending on the situation, English might say cutting wire even if the Japanese uses 糸.

Yes. Japanese often leaves out the subject when it is obvious from context.

So this sentence could mean things like:

• I cut the clay with a cutting wire.
• You cut the clay with a cutting wire.
• One cuts the clay with a cutting wire.

Japanese does this very often, and it is one of the biggest differences from English.

Because the sentence is just a simple statement focused on the action.

Japanese does not need to state a topic or subject in every sentence. If the subject is already understood, it is often omitted entirely.

If you wanted to add one, you could, for example, say:

• 私は切り糸で粘土を切る。 = I cut the clay with a cutting wire.

But in many situations, leaving it out sounds more natural.

No. Standard Japanese normally does not use spaces between words.

So the usual written form is:

切り糸で粘土を切る。

Learner materials often add spaces to make the structure easier to see, but native Japanese writing normally does not.

切る is the dictionary form of the verb.

In a sentence like this, it can express:

• a general action
• a habitual action
• a plain, non-polite present/future meaning

Depending on context, it could mean something like:

• cut
• cuts
• will cut

If you wanted polite speech, you would say:

切り糸で粘土を切ります。

If you wanted past tense, you would say:

切り糸で粘土を切った。