Basic concept 10

Snag / Hitch

A minor difficulty

Glitch

A minor technical problem

Setback

A delay in progress

Stumbling block

An obstacle to action/agreement

Pitfall

An unexpected danger or difficulty

Impediment

Something that hinders movement or progress

Dilemma

A choice between two difficult options

Ordeal

A severe, painful experience

Abstruse

Hard to understand

Arduous

Tiring and hard

Complex

Hard to understand

Convoluted

Too long and confusing

Gruelling

Extremely tiring

Insufferable

Unbearably annoying

Obstructive

Causing deliberate delays

Tough

Difficult to do

Wayward

Unpredictable and uncontrollable

What a drag!

How annoying!

Chore

A boring task

What's eating him?

What's bothering him?

Hassle

A severe inconvenience

To hassle (someone)

to annoy repeatedly

To slog

To work very hard (s)

In a fix spot

In a difficult situation

Up to your neck

In deep trouble/difficulty

Tricky situation

A delicate, hard situation

Out of the woods

Free from trouble

Downside

A disadvantage

to grind

to work very hard (g)