When used as a verb, “affect” means to influence, according to The Associate Press Stylebook and Briefing on Media Law.
The weather affects traffic patterns.
“Effect” means to cause.
The new mayor will effect many changes in the city.
Used as a noun, “effect” means result.
He did not realize the effect his actions would have upon others.
This word should not exist. It is a double negative. Always use “regardless.”
Regardless of the situation, he always keeps a smile on his face.
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