A really fast thesaurus... with lots of synonyms.
We don't have synonyms for slackened yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are slacken, blackened and slackener.
We don't have any synonyms for slackened yet.
Think slackened belongs in the thesaurus? Recommend it and we'll take a look.