in effect

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in effect

The new traffic law is already in effect.

Definition
  1. Adverb: In reality or actual fact; for all practical purposes. Used to describe the true situation, often when it differs from the stated or apparent one.
  2. Adjective: Operating or being applied; in force. Used to describe a law, rule, or condition that is currently active and valid.
Usage
  • As an Adverb: Use "in effect" to clarify the practical truth of a situation. It often introduces a statement that summarizes the real outcome or meaning.
    • Example: His silence was, in effect, an admission of guilt.
  • As an Adjective: Use "in effect" after a form of the verb "to be" (is, are, was, were) to state that a rule or state is officially active.
    • Example: The new privacy policy is now in effect.
Examples
  • Adverb:
    • The two proposals are in effect identical, despite their different wording.
    • By canceling the main event, they have, in effect, ended the festival.
  • Adjective:
    • A state of emergency remains in effect for the coastal region.
    • Is the old contract still in effect, or has it been replaced?
Advanced Usage
  • "In effect" as a sentence adverb: It can modify an entire clause to signal you are stating the practical result.
    • The merger will, in effect, create a monopoly in the industry.
  • Legal/Formal Context: The adjectival use is common in legal, governmental, and official announcements.
    • The treaty will come into effect next month. (Note: "come into effect" is a common phrasal verb meaning "to become active").
Variants and Related Words
  • Effective (adj): Successful in producing a desired result; also, officially operative (as of a date).
    • The new law becomes effective on January 1st.
  • Effectively (adv): In such a manner as to achieve a desired result; in essence, virtually.
    • He effectively runs the entire department.
  • Into effect (phrase): Used with verbs like "come," "go," "put," or "bring" to indicate the start of a rule's application.
    • They put the new safety measures into effect immediately.
Synonyms
  • Adverb: effectively, practically, virtually, essentially, in reality, in fact, actually.
  • Adjective: operative, in force, active, current, valid, applicable.
Related Phrases
  • Take effect: To begin to produce results or to become active.
    • The medication will take effect in about thirty minutes.
  • With immediate effect (formal): Starting right now.
    • The regulation is revoked with immediate effect.
Notes on Meaning

The two meanings are connected by the core idea of something being real and operational. As an adverb, it refers to a factual reality ("in reality, this is true"). As an adjective, it refers to an official reality ("this rule is officially real and active now").

in effect

The new traffic law is already in effect.

Adjective
  1. exerting force or influence
    • the law is effective immediately
    • a warranty good for two years
    • the law is already in effect (or in force)
Adverb
  1. in actuality or reality or fact
    • she is effectively his wife
    • in effect, they had no choice