Synonyms for slack up

Most common

relax · slack · slacken

All synonyms

Verb

Definitions

1. v. 1

   To slack; to let one's standards slip.

Example sentences

• relax I can't relax for a second when the kids are home.
• slack We tend to slack off after many hours of hard work.
• slacken Will Australia slacken its immigration rules?

By length

5 letters

relax², slack¹

7 letters

slacken²

The small number after each word is its number of syllables (relax² = 2 syllables).