し: Listing Reasons and Adding Up | Japanese Grammar

し joins clauses to pile up reasons or co-existing facts, usually building toward a conclusion: "it's cheap, and it's tasty, so I want to come back." That much looks like a plain English "and." But し carries a flavor English "and" doesn't: it signals that what you've listed is not the whole story — there are other reasons where these came from. Even a single し whispers "for one thing…," which is why it so often softens and justifies rather than merely connects. This page is about that extra layer, and about the firm rule that し joins predicates, not nouns.

The core: stacking reasons toward a conclusion

The classic し sentence lists two or three grounds, then draws a conclusion from them.

この店は安いし、おいしいし、また来たい。

kono mise wa yasui shi, oishii shi, mata kitai

This place is cheap, it's tasty, so I want to come again.

頭も痛いし、熱もあるし、今日は休みます。

atama mo itai shi, netsu mo aru shi, kyō wa yasumimasu

My head hurts, I have a fever, so I'll take today off.

天気もいいし、散歩でもしよう。

tenki mo ii shi, sanpo demo shiyō

The weather's nice, so let's go for a walk or something.

Each し-clause states a co-existing fact, and together they justify the final clause. Notice how naturally the reasons take も ("also"): 頭も痛いし、熱もあるし. That も…し combination is the heart of the pattern — "not only is my head sore, there's also a fever" — reasons accumulating, each adding to the case.

How し attaches

し follows a predicate — a verb, an adjective, or a noun/な-adjective with だ. It does not attach to a bare noun.

Word type	Form + し	Example
Verb	plain form + し	行くし / 行ったし
い-adjective	plain form + し	安いし / 高くないし
な-adjective	だ + し	静かだし
Noun	だ + し	学生だし
Polite	ます/です + し	安いですし / 行きますし

今日は日曜日だし、ゆっくりしよう。

kyō wa nichiyōbi da shi, yukkuri shiyō

It's Sunday today, so let's take it easy.

ここは静かだし、集中できる。

koko wa shizuka da shi, shūchū dekiru

It's quiet here, and I can concentrate.

The だ before し on nouns and な-adjectives is not optional — 学生し and 静かし are ungrammatical. English speakers drop it constantly because English "and" needs no such support.

💡

し hangs off a predicate, never a bare noun. Verbs and い-adjectives take the plain form as-is (行くし, 安いし); nouns and な-adjectives must borrow a だ first (学生だし, 静かだし). Missing だ is the number-one し error.

The insight: even one し means "for one thing…"

This is what separates し from a neutral conjunction. A single し does not just mean "because"; it implies additional, unstated reasons. It's a "for one thing…" marker — you name one ground and quietly gesture at others.

雨も降っているし、家にいよう。

ame mo futte iru shi, ie ni iyō

It's raining (for one thing), so let's stay home.

Compare that with 雨が降っているから、家にいよう ("it's raining, so let's stay home"). The から version gives the reason, focused and complete. The し version says "it's raining — and there are other reasons too (I'm tired, it's late, whatever) — so let's stay in." That open-endedness is exactly why し softens: instead of pinning your decision on one hard cause, you present it as the natural sum of several, some left unsaid. It sounds less pushy, more like a shared, reasonable conclusion.

This is also why a trailing し is a complete, natural utterance — the unstated reasons are the whole point.

「行かないの？」「うん、疲れてるし。」

ikanai no? un, tsukareteru shi

'You're not going?' 'Nah, I'm tired and all.'

お金もないし、時間もないし…。

okane mo nai shi, jikan mo nai shi...

I've got no money, no time… (you get the idea).

That "疲れてるし。" left hanging is a soft, slightly evasive excuse — "I'm tired, among other things." English does the same with a trailing "…and stuff" or "…and all."

💡

Even a single し implies "and there's more where that came from." That's why it softens and justifies — you're presenting your reason as one of several, not laying down a single hard cause. Reach for し when you want the gentle "for one thing…" tone.

し vs から/ので

から and ので give the reason for something — a focused, causal "because." し lists reasons as an open set. They even combine: it's common to stack facts with し and then close with から for the final push (安いし、近いし、便利だから、ここにする — "it's cheap, it's close, and since it's convenient, I'll go with here"). Rule of thumb: one decisive cause → から/ので; a bundle of contributing reasons, with more implied → し.

し vs や/とか — the nouns-vs-predicates line

The listing particles や and とか string together nouns ("apples and bananas and such"). し strings together predicates — clauses, whole facts. They aren't interchangeable, and mixing them up is the most frequent structural error. If what you're joining are things, use や or the casual とか; if what you're joining are statements/reasons, use し. (For the neutral noun-lister や and its partner など, see や (partial listing).)

彼は頭もいいし、性格もいいし、みんなに好かれている。

kare wa atama mo ii shi, seikaku mo ii shi, minna ni sukarete iru

He's smart, he's got a good personality, so everyone likes him.

One more caution: し points one direction

Because し stacks reasons that all support the same conclusion, it's wrong for contrast. "Cheap but bad" is not a し sentence — those two facts pull against each other. Use けど/が for contrast, and save し for reasons rowing the same way.

Common mistakes

❌ 彼は先生し、とても忙しい。

kare wa sensei shi, totemo isogashii

Incorrect — a noun needs だ before し.

✅ 彼は先生だし、とても忙しい。

kare wa sensei da shi, totemo isogashii

He's a teacher, and he's very busy.

❌ この部屋は静かし、広い。

kono heya wa shizuka shi, hiroi

Incorrect — な-adjectives also take だ before し.

✅ この部屋は静かだし、広い。

kono heya wa shizuka da shi, hiroi

This room is quiet, and it's spacious.

❌ りんごしバナナを買った。

ringo shi banana o katta

Incorrect — し joins predicates, not nouns; for a noun list use と or や.

✅ りんごとバナナを買った。

ringo to banana o katta

I bought apples and bananas.

❌ この店は安いし、まずい。

kono mise wa yasui shi, mazui

Off — し stacks reasons pointing the same way; for a contrast ('cheap but bad') use けど.

✅ この店は安いけど、まずい。

kono mise wa yasui kedo, mazui

This place is cheap, but the food's bad.

The pattern behind these: English "and" is register-neutral and connects anything — nouns, clauses, even contrasts. し is narrower and richer. It bolts onto predicates (with だ propping up nouns and な-adjectives), it stacks same-direction reasons, and it always implies there are more.

Key takeaways

し lists co-existing reasons/facts toward a conclusion — "cheap, tasty, so I'll come back."
Even a single し implies "and there's more" — a "for one thing…" softener, not a plain "because."
し attaches to predicates: verbs and い-adjectives take the plain form; nouns and な-adjectives need だ first.
Reasons in a し chain love も (頭も痛いし、熱もある).
For a noun list use と/や/とか; for a single decisive cause use から/ので; for contrast use けど — never し.

Now practice Japanese

Reading grammar gets you part of the way. The exercises are where it sticks — free, no signup needed.

Start learning Japanese→