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/ˈslɒɡ(ˌ)fɛst/ · noun
(informal) An activity or event characterized by a long duration and an exhausting, wearisome perception by its participants..
"Whatever the reason, he took the land route; and it was hard going, a slogfest."
"Inexperienced people and kids may appreciate moderate weather, easy terrain, and an easy first find rather than an all-day slogfest that doesn't locate the cache until dusk—or not at all—and leaves everyone drenched to the bone."
"An otherwise challenging and fun endurance endeavor can dissolve into a slog fest or worse, a never-ending nightmare."
Use slogfest when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Slogfest means (informal) An activity or event characterized by a long duration and an exhausting, wearisome perception by its participants..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
"Whatever the reason, he took the land route; and it was hard going, a slogfest."
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