Meaning : Down to defeat, death, or ruin.
Example :
Their competitors went under.
Meaning : Through a range downward.
Example :
Children six and under will be admitted free.
Meaning : Into unconsciousness.
Example :
This will put the patient under.
Meaning : In or into a state of subordination or subjugation.
Example :
We must keep our disappointment under.
Meaning : Below some quantity or limit.
Example :
Fifty dollars or under.
Meaning : Below the horizon.
Example :
The sun went under.
Meaning : Down below.
Example :
Get under quickly!.