English Dictionary

off

/ɒf/

prep

Not positioned upon, or away from a position upon. / Detached, separated, excluded or disconnected from; away from a position of attachment or connection to.

The book fell off the shelf.

意味（1）

Not positioned upon, or away from a position upon.

He's off the roof now.

意味（2）

Detached, separated, excluded or disconnected from; away from a position of attachment or connection to.

The phone is off the hook

意味（3）

Used to indicate the location or direction of one thing relative to another, implying adjacency or accessibility via.

His office is off this corridor on the right.

意味（4）

Used to express location at sea relative to land or mainland.

The island is 23 miles off the cape.

意味（5）

Removed or subtracted from.

There's 20% off the list price.

意味（6）

No longer wanting or taking.

He's been off his feed since Tuesday.

意味（7）

(colloquial, more properly 'from') Out of the possession of.

He didn't buy it off him. He stole it off him.

意味（8）

Placed after a number (of products or parts, as if a unit), in commerce or engineering.

Tantalum bar 6 off 3/8Dia × 12 — Atom, Great Britain Atomic Energy Authority, 1972