take effect

Start to work

To take effect is to become operative or produce results.

A law takes effect on its implementation date: The new regulations take effect January 1.

Medicine takes effect when it begins working: The painkiller should take effect within thirty minutes.

A change takes effect when it becomes real rather than merely announced.

activation

trigger

What initiates action

begin · enact · activate · engage · start · launch · go live · come into force · come into play · switch on

onset

begin

To start something

emerge · appear · surface · develop · unfold · materialize · dawn · arise · occur · happen

implementation

enactment

Passing into law

legislation · adoption · application · institution · promulgation · codification · passage · signing · decree · ruling

impact

influence

Power to affect others

change · transformation · ramification · repercussion · aftermath · response · reaction · shift · alteration · difference

Opposites
activation/implementation

take effectexpire

Cease to be valid

lapse · terminate · end

efficacy/impact

take effectfail

Be unsuccessful

fall flat · come to nothing · fizzle out · misfire · do nothing

Family

take, effect, affect, affected, affecting, affection, effective, effectively, ineffective

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Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G