fail-safe
Category: The Times Concise Crossword
Signs indicating a novice driver
L-plates
Rough-and-ready guidelines
rules of thumb
Person refusing to cast a vote
ABSTAINER
People on a computer system
USERS
Lift (a weighty object)
HEFT
Highly probable
odds-on
Followers of an ancient Celtic religion
DRUIDS
Drive to distraction
DERANGE
Distinctive or characteristic attribute
PROPERTY
Device controlling the flow of liquid
TAP
Contrary to reason or propriety
PERVERSE