We found one dictionary that defines the word work hard:

Opposite: sloth, laziness, idleness, inactivity Phrases: to work hard, work very hard, work really hard, work that is hard, work hard play hard, more... ▸ Words similar to work hard ▸ Usage examples for work hard ▸ Idioms related to work hard ▸ Wikipedia articles (New!) ▸ Words that often appear near work hard ▸ Rhymes of work hard ▸ Invented words related to work hard