D

Abbreviation of declare.

From a higher position to a lower one; downwards.

“The cat jumped down from the table.”

At a lower or further place or position along a set path.

“His place is farther down the road.”

South (as south is at the bottom of typical maps).

“I went down to Miami for a conference.”

Away from the city (regardless of direction).

“He went down to Cavan.”

At or towards any place that is visualised as 'down' by virtue of local features or local convention, or arbitrarily, irrespective of direction or elevation change.

“She lives down by the park.”

Towards the opponent's side (in ball-sports).

Into a state of non-operation.

“The computer has been shut down.”

To a subordinate or less prestigious position or rank.

“After the incident, Kelly went down to Second Lieutenant.”

In the direction leading away from the principal terminus, away from milepost zero.

(sentence substitute) Get down.

“Down, boy! (such as to direct a dog to stand on four legs from two, or to sit from standing on four legs.)”

(academia) Away from Oxford or Cambridge.

“He's gone back down to Newcastle for Christmas.”

From a remoter or higher antiquity.

“These traditions have been handed down over generations.”

So as to lessen quantity, level or intensity.

“Please turn the music down!”

So as to reduce size, weight or volume.

“Boil the mixture down to a syrupy consistency.”

From less to greater detail.

“This spreadsheet lets you drill down to daily or even hourly sales figures.”

So as to secure or compress something to the floor, ground, or other (usually horizontal) surface.

“We need to nail down this carpet so people don't keep tripping over it.”

(intensifier) Used with verbs to add emphasis to the action of the verb.

“They tamped (down) the asphalt to get a better bond.”

Used with verbs to indicate that the action of the verb was carried to some state of completion, rather than being of indefinite duration.

“He boiled the mixture. / He boiled down the mixture.”