to cause (an effect) to operate

initiate something; start a function

begin

start

to take the first action, do the first part

start

to force, urge (a person)

prompt, incite

to introduce (a new official, professor, passenger ship etc) at a special ceremony; to be the beginning of (something)

begin; install

to persuade or influence (a person); to cause, bring, about (something)

cause to happen; encourage

to cause (a scheme etc) to start working

start, introduce

a kind of boat with an engine (used on rivers and lakes and in harbours); an act of launching a ship or spacecraft

send off

(to cause people, help etc) to group together in order to carry out a particular task

ready for action, movement

to continue, go on;

physically or mentally carry on, carry out

to force (something) to move forward

throw; release into air

(to cause something, oneself) to move from side to side, up and down etc

quiver, tremble

of shake

quiver, tremble

a lever used for releasing a spring, especially of a gun; to be the immediate cause of something serious or violent

cause to happen

to make oneself responsible for (something); agree, promise, (to do something)

attempt, engage in

of undertake

attempt, engage in