Translation guide
The English word "profound" covers deep intellectual insight, intense emotions, significant impact, and extreme states. Japanese uses different words for each nuance. Direct translation often fails.
a profound impact
For significant effect, 大きな is more natural than 深い.
Describing ideas, thoughts, or insights that are deep, wise, or showing great understanding.
a profound thinker · profound wisdom · a profound question
The most common and versatile word for 'deep' in abstract senses. Works for thoughts, meaning, understanding, etc.
His story is very profound.
More formal and literary, emphasizing profound and unfathomable depth. Often used for philosophy or abstract concepts.
Literally 'deep inside', implies complexity and layers of meaning. Often used for art, culture, or nuanced topics.
Expressing a strong, heartfelt feeling such as sadness, gratitude, or love.
profound sorrow · profound love · profound relief
Describing an effect, influence, or change that is very great and far-reaching.
a profound effect · profound implications · profound changes
Emphasizing that something is very great or complete, like silence, ignorance, or disability.
profound silence · profound ignorance · profound deafness
While 深い can mean 'profound', it is not natural for phrases like 'profound impact' or 'profound change'. Use 大きな or other specific words instead.
profound influence (unnatural in most contexts)
深い is the everyday word for deep/profound. 深遠 is formal and philosophical. 奥深い implies complexity and hidden depth, often positive.
That was a truly profound experience.
I gained profound insights from this book.
彼の思想は深遠だ。
His philosophy is profound.
Japanese culture is profound.
I was enveloped in profound sadness.
I am filled with profound gratitude.
Very formal, used almost exclusively in set phrases like 深甚なる感謝 (profound gratitude) in speeches or formal letters.
I express my profound gratitude.
The most natural way to say 'profound' in the sense of 'big' or 'significant'. 深い is less common here.
The discovery had a profound impact on science.
His death brought about a profound change in me.
Used for extremely large-scale impact, often negative (damage, influence). Formal and somewhat written.
The earthquake caused profound damage.
Means 'serious' or 'grave', often used for profound problems or concerns. Not for positive impact.
Only for negative situations (profound crisis, profound worry). Do not use for positive impact.
This is a profound problem.
Works for silence, sleep, etc. For ignorance or disability, other words are better.
A profound silence enveloped the area.
He fell into a profound sleep.
Means 'complete' or 'utter', good for profound ignorance, nonsense, etc.
He is profoundly ignorant.
Used for profound disability or medical conditions. Formal/technical.
He has a profound disability.
その本は私に大きな影響を与えた。
The book had a profound influence on me.