Having a large distance from the top/surface to the bottom; physically deep (e.g., sea, hole).
この池は思ったより深い。
This pond is deeper than I thought.
海がとても深いところでは光が届かない。
In parts of the sea that are very deep, light does not reach.
箱が深いので、物がたくさん入る。
The box is deep, so it can hold a lot of things.
Having depth in meaning, thought, or feeling; profound, thought-provoking.
彼の言葉にはいつも深い意味がある。
His words always have a deep meaning.
その映画は深いテーマを扱っている。
That film deals with profound themes.
深い悲しみを胸に抱える。
To carry deep sorrow in one's heart.
Dense or thick; having great substance or concentration (e.g., fog, forest, flavor).
朝、深い霧で前がよく見えなかった。
In the morning, a thick fog made it hard to see ahead.
山の中は木が生い茂って深い森になっている。
In the mountains the trees grow thickly and form a dense forest.
このスープはうま味が深い。
This soup has a rich, deep flavor.
Having a close, intimate relationship; emotionally close or strongly connected.
彼らは長年の付き合いで深い友情がある。
They have a deep friendship built over many years.
父と娘はとても深い信頼関係で結ばれている。
A father and daughter are bound by a very deep trust.
あの二人は深い仲だと噂されている。
Those two are rumored to be very close (intimately involved).
Intense or strong (emotion, color, scent, etc.); of high degree or intensity.
彼女は深い嫉妬を感じていた。
She felt deep jealousy.
その絵は色使いが深く、目を引く。
That painting uses deep colors and is eye-catching.
コーヒーの深い香りに包まれる。
Be enveloped by the rich aroma of coffee.
Indicating a late time (as in late at night); similar to 'late' or 'deep into the night' in context.
夜も深くなってきたので、そろそろ帰ろう。
It's getting late into the night, so let's head home soon.
深い時間に一人で町を歩くのは危ない。
Walking alone in the town at a late hour is dangerous.