Related Clues:

• Place or person where something begins
• The place where something begins
• Origin, root
• Informer or decoy for the cops
• Origin or starting point
• Narrow-leaved green herbage
• Inform on, tell tales
• 'Origin, root (6)'
• Telltale
• From which something begins
• What comes from this is all a matter of taste, by the sound of it
• That might become a bit over her
• There'd be precious little of such nuisance under a c.a.
• This needs her for 23 across
• The origin of good taste, by the sound of it