Crossword Genius

Gossip is good when appropriate (6)

Ross

I believe the answer is:

gasbag

'gossip' is the definition.
(I've seen this before)

'good when appropriate' is the wordplay.
'good' becomes 'g' (abbreviation).
'when' becomes 'as' (eg 'when I walked' means 'as I walked').
'appropriate' becomes 'bag' (I've seen this in other clues).
'g'+'as'+'bag'='GASBAG'

'is' acts as a link.

(Other definitions for gasbag that I've seen before include "One who talks too much, or a balloon" , "One talks incessantly about trivial things" , "One talks at length on boring topics" , "One who natters a lot" , "I can't shut up" .)

I've seen this clue in The Times.
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