Definition of spare no effort
- We will spare no effort to ensure the safety of the tunnels.
: not being used
: being over and above what is needed : superfluous
: not liberal or profuse : sparing
: to forbear to destroy, punish, or harm
: to refrain from attacking or reprimanding with necessary or salutary severity
: to relieve of the necessity of doing or undergoing something
: a spare tire
: a duplicate (such as a key or a machine part) kept in reserve
: the knocking down of all 10 pins with the first 2 balls in a frame in bowling
: conscious exertion of power : hard work
: a serious attempt : try
: something produced by exertion or trying
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