What is the difference between "必ずしも", "そんなに", "〜だけでなく", "一向に"?

"必ずしも" means "not necessarily; not always (used with a negative predicate)", "そんなに" means "(not) so much; (not) that much", "〜だけでなく" means "not only... but also...", "一向に" means "not at all, utterly, entirely (usually with negative)".

Quadruple VS

Synonym Boundary: "必ずしも", "そんなに", "〜だけでなく", "一向に"

All represent the core concept "not", but require precise selection.

Japanese Option A

必ずしも

かならずしも (kanarazushimo)

N4 / CEFR

Japanese Option B

そんなに

そんなに (sonnani)

N3 / CEFR

Japanese Option C

〜だけでなく

〜だけでなく (〜dake de naku)

N3 / CEFR

Japanese Option D

一向に

いっこうに (ikkou ni)

N2 / CEFR

Quadruple VS Nuance Contrast & Social Differences

When expressing "not" in Japanese, you must carefully distinguish between "必ずしも", "そんなに", "〜だけでなく", "一向に" based on context.

必ずしも (かならずしも (kanarazushimo) - Level: N4): Maps to "not necessarily; not always (used with a negative predicate)" and is used when Always followed by a negative expression.
そんなに (そんなに (sonnani) - Level: N3): Maps to "(not) so much; (not) that much" and is used when Often used with negative expressions.
〜だけでなく (〜だけでなく (〜dake de naku) - Level: N3): Maps to "not only... but also..." and is used when Indicates that something applies not just to one thing, but to another as well, often emphasizing the second part. Connects two pieces of information..
一向に (いっこうに (ikkou ni) - Level: N2): Maps to "not at all, utterly, entirely (usually with negative)" and is used when Always used with a negative verb or adjective to emphasize 'not at all,' 'not in the least.' It expresses a complete lack of progress, change, or effect, often despite expectations or efforts..

Mixing these up can easily lead to unnatural translations. Refer to the bilingual context cards below to master the boundaries!

Context for "必ずしも"

お金持ちが必ずしも幸せとは限りません。

Wealthy people are not necessarily happy.

Context for "そんなに"

この映画は、そんなに面白くありませんでした。

This movie wasn't that interesting.

Context for "〜だけでなく"

彼は日本語だけでなく、英語も話せる。

He can speak not only Japanese but also English.

Context for "一向に"

いくら説明しても、彼は一向に理解しようとしない。

No matter how much I explain, he shows no sign of understanding at all.

Synonym Mastery Challenge

Which Japanese word perfectly fits this blank space?

Fill in the blank: "お金持ちが＿＿＿幸せとは限りません。" (Meaning: "Wealthy people are not necessarily happy.")

🎉 Correct Answer!

Remember: "必ずしも" is correct here because it represents "not necessarily; not always (used with a negative predicate)" in the context: "Wealthy people are not necessarily happy.".