What is the difference between "これから", "今後", "兼ねてより", "徹頭徹尾", "心底"?

"これから" means "from now on, after this", "今後" means "from now on, hereafter", "兼ねてより" means "from before, for some time, for a long time", "徹頭徹尾" means "from beginning to end, consistently, thoroughly, through and through", "心底" means "from the bottom of one's heart, deep down, truly, sincerely".

Quintuple VS

Synonym Boundary: "これから", "今後", "兼ねてより", "徹頭徹尾", "心底"

All represent the core concept "from", but require precise selection.

Japanese Option A

これから

これから (korekara)

N5 / CEFR

Japanese Option B

今後

こんご (kongo)

N4 / CEFR

Japanese Option C

兼ねてより

かねてより (kaneteyori)

N2 / CEFR

Japanese Option D

徹頭徹尾

てっとうてつび (tettōtetsubi)

N2 / CEFR

Japanese Option E

心底

しんそこ (shinsoko)

N1 / CEFR

Quintuple VS Nuance Contrast & Social Differences

When expressing "from" in Japanese, you must carefully distinguish between "これから", "今後", "兼ねてより", "徹頭徹尾", "心底" based on context.

これから (これから (korekara) - Level: N5): Maps to "from now on, after this" and is used when Adverb. Indicates an action or state that will begin or continue from the present moment into the future. Used for plans or impending events..
今後 (こんご (kongo) - Level: N4): Maps to "from now on, hereafter" and is used when Used to indicate future actions or situations starting from the present moment. Can be used in both formal and informal contexts, but gives a slightly more official tone than 'これから.
兼ねてより (かねてより (kaneteyori) - Level: N2): Maps to "from before, for some time, for a long time" and is used when Used to indicate something has been the case or planned for a while. Often followed by 決めていた.
徹頭徹尾 (てっとうてつび (tettōtetsubi) - Level: N2): Maps to "from beginning to end, consistently, thoroughly, through and through" and is used when Emphasizes consistency or thoroughness in an action, belief, or characteristic throughout its entire duration..
心底 (しんそこ (shinsoko) - Level: N1): Maps to "from the bottom of one's heart, deep down, truly, sincerely" and is used when 心の奥底から感じることや思うことを強調する表現です。副詞的に使うことが多い。.

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

Context for "これから"

これから学校へ行きます。

I'm going to school now/from now.

Context for "今後"

今後ともどうぞよろしくお願いいたします。

We look forward to your continued support from now on.

Context for "兼ねてより"

兼ねてより計画していた海外旅行にようやく行けることになった。

I finally get to go on the overseas trip I've been planning for some time.

Context for "徹頭徹尾"

彼は徹頭徹尾、自分の信念を貫いた。

He stuck to his beliefs consistently from beginning to end.

Context for "心底"

彼は心底から彼女の成功を願っていた。

He truly wished for her success from the bottom of his heart.

Synonym Mastery Challenge

Which Japanese word perfectly fits this blank space?

Fill in the blank: " ＿＿＿学校へ行きます。" (Meaning: "I'm going to school now/from now.")

🎉 Correct Answer!

Remember: "これから" is correct here because it represents "from now on, after this" in the context: "I'm going to school now/from now.".