We found 2 dictionaries that define the word slacks off:

General (2 matching dictionaries)

1. slacks off: Merriam-Webster
2. slacks off: Vocabulary.com

Phrases: slacks off during the big game, more... ▸ Words similar to slacks off ▸ Usage examples for slacks off ▸ Idioms related to slacks off ▸ Wikipedia articles (New!) ▸ Words that often appear near slacks off ▸ Rhymes of slacks off ▸ Invented words related to slacks off