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slog (one's) guts out

To put a great amount of effort into something; to work very hard at something. I slogged my guts out for a few years as a court messenger for a legal firm while I finished up my law degree, and they eventually offered me a job as an attorney. There's nothing more disheartening than to slog your guts out on an assignment, only for the computer to crash and delete all your work.
See also: gut, out, slog

slog away

To work (on something) strenuously and continuously, especially for a long period of time. Sorry, I won't join you for lunch today—I've got too much to do, so I'm just going to keep slogging away. I've been slogging away at this report for the last three days. I'm just ready for it to be finished!
See also: away, slog

slog through

To work at or make progress through something at a sluggish, strenuous pace, especially for a long period of time. We had to slog through nearly a mile of swamp before we reached solid ground. I've been slogging through this really dense book about economic theory for my college course.
See also: slog, through

slog through something

to wade or trudge through something, such as mud or snow. Do I have to slog through the snow to go to school? Can't you drive me? When I was your age, I slogged through snow twice this deep to get to school.
See also: slog, through

work your guts out


flog your guts out


slog your guts out

If you work your guts out, flog your guts out or slog your guts out, you work very hard. These women were amazing. They worked their guts out from 7.30 to 4.30 every day, often all evening and weekend too if they had families. I've been slogging my guts out for months, trying to get this project finished.
See also: gut, out, work

slog/sweat/work your ˈguts out

(informal) work very hard: I’ve slogged my guts out digging this ditch, and I’m completely exhausted.You sweat your guts out all your life and what do you get when you retire? Next to nothing. OPPOSITE: not do a stroke (of work)
See also: gut, out, slog, sweat, work

ˌslog/ˌslug it ˈout

(British English, informal) (of people, organizations, competitors, etc.) fight very hard until one person or group finally wins: The boxers slugged it out to the finish.The two teams will slog it out for second place.
In this idiom, slug and slog are both informal words meaning ‘to hit very hard’.
See also: out, slog, slug

slog away

To work diligently for a lengthy period of time: The student slogged away on the algebra assignment.
See also: away, slog

slog through

To walk or progress through something with a slow heavy pace: The explorers slogged through the swamp. I slogged through both volumes of the author's philosophical writings.
See also: slog, through
References in periodicals archive ?
My favorite shot was always the slog sweep," Taylor said.
8, 2002, was a day the SLOG staff had long awaited: the opening ceremony for the 2002 Olympic Winter Games.
Alex Wakeley clouted Woakes for six but perished in an attempt to slog Rankin.
ROUTE MARCH: Walking to work is well worth the hard slog
We're right at the beginning of the road - it's going to be a long slog.
He didn't slog his way round Britain, France and Italy on 11 separate walks since 1985, raising around pounds 10 million in aid of Leukaemia Research.
It's going to be a tough slog for the next four or five years," said Matt Foreman, executive director of the National Gay and Lesbian Task Force.
Brendan Barber, general secretary of the TUC, said, 'It's a cold, dark Monday but autumn doesn't have to be such a slog.
But even the thought of a hard slog on the Swansea sand won't have wiped the smile off star striker Trundle's face after the Liverpudlian agreed a two-year-extension to his contract this week.
WE'VE had the coloured strips and pads, we've had the day and night razzamatazz, with the pop music accompanying the fall of wickets, and now we have the 20-over slog.
In 1998, Buenaventura's trucks could barely slog through flooded highways and washed-away roads.
Skies happen to clear just as you slog back to school on Monday morning.
It's a hard slog and you never get paid for the extra hours that you put in.