action

action /ˈækʃən/ noun
plural actions
action
/ˈækʃən/
noun
plural actions
Britannica Dictionary definition of ACTION
1 
[count] : something that a person or group does
— often used with take
◊ The saying actions speak louder than words means that the things that you do are more important than the things that you say.
2 
[noncount] : things done to achieve a particular purpose
— often used with take
◊ A man of action or woman of action is a man or woman who works in an active way to do things.
— see also affirmative action, political action committee
3 
[noncount] : fighting that happens in a war
— see also in action (below)
4 
the action : the most exciting or interesting activities that are happening in a particular place
5 
[noncount]
a  informal : a chance or opportunity to make money
◊ A piece of the action or (chiefly US) a cut of the action or (chiefly Brit) a slice of the action is a portion or share of the money that can be earned from something.
b  slang, sometimes offensive : sexual activity
6 
[noncount] : the events that happen in a story, movie, etc.
7 
[noncount] : events that happen quickly and that cause feelings of danger and excitement
— often used before another noun — see also live action
8 
— used as a director's command to start filming part of a movie or television show
9 
law : the process of having a court of law make a decision about an argument
[count]
[noncount]
— see also class action
10 
[noncount] : a process in which one thing causes a change in another thing
11 
: the way that something works or moves
[noncount]
[singular]

in action

: in the act of doing something : performing a usual job or function
— see also action 3 (above)

into action

: to an active state
◊ When people or things are called into action, they are asked to start working or doing a particular task.

out of action

: unable to perform a usual job or function : not in action