Course that is right but a bit more sticky (7)

I believe the answer is:

tackier

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'a bit more sticky' is the definition.
I can't tell whether this defines the answer.

'course that is right' is the wordplay.
'course' becomes 'tack' (I've seen this before).
'that is' becomes 'ie' (abbreviation for id est, 'that is' in Latin).
'right' becomes 'r' (common abbreviation).
'tack'+'ie'+'r'='TACKIER'

'but' is the link.

Can you help me to learn more?

(Another definition for tackier that I've seen is " not so tasty".)

I've seen this clue in The Irish Times.

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