hardest working

Least likely slacking

Hardest working is the superlative form of hard-working, describing someone who exerts more effort or dedication than others in a group: She's the hardest working person on the team.

The phrase often carries admiration, though it can also imply overwork or exploitation: The hardest working employees don't always get promoted.

Related

diligent · burning the midnight oil · grit · labor-intensive · tireless · blue-collar · salt of the earth · sweat equity · tenacity · hustle · elbow grease · ambitious · persevering · determination · disciplined · focused · motivated · productive

Opposites
effort and industry

hardest workinglaziest

Superlatively disinclined to exertion

Family

hard, harder, hardest, hardly, hardness, harden, hardened, hardening, hardship

Familiarity
Top 50,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Positive · Everyday, not technical · Rated G