Used when something demands extra mental or physical effort to complete or understand.

Effort Required

Implies a process is not progressing smoothly and is encountering obstacles or resistance.

Not Smooth

May suggest the speaker is feeling stress or frustration about the difficulty faced.

Refers specifically to the difficulty of physically moving through an environment.

Used to describe how weather conditions, like rain or snow, can make travel challenging.

Suggests that the journey or task might need more physical strength or endurance than usual.

Used when something is not just slow, but has slowed down after a better pace or start.

Can describe a situation that tests one's patience due to slow or difficult progress.

Often, the difficulty carries an emotional weight that affects motivation or mood.