To hike on a multi-day trail without carrying a backpack. Typically, this is accomplished by having another person transport the backpack using a vehicle.

Alternative form of slack-handedness

Alternative form of slack-handed

(derogatory) One who partakes in slacktivism.

(informal, skiing, snowboarding) An off-piste terrain

Alternative form of slack-water

Laxity; idleness; lack of requisite effort.

(informal) Characteristic of a slacker.

Somewhat slack.

One who takes part in slackpacking.