Definition of "slacken" [slack•en]

  • To make or become slower; slow down: The runners slackened their pace. Air speed slackened. (verb-transitive)
  • To make or become less tense, taut, or firm; loosen: I slackened the line to let the fish swim. The tension in the board room finally slackened. (verb-transitive)
  • To make or become less vigorous, intense, or severe; ease: slacken discipline; afraid that morale might slacken. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "slacken" in a sentence
  • "Think I¬íll just kind of slacken up on this G.C.L. stuff now."
  • "Think I'll just kind of slacken up on this G.C.L. stuff now. ''"
  • "No matter which of the two levers he clicked below either hand-grip, the chain seemed to slacken, meaning the pedals spun faster, and the bike slowed."