Crossword Genius

Republican playing silly, interrupting to propose amendment, for instance? (11)

Ross

I believe the answer is:

trisyllable

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'amendment for instance?' is the definition.
I can't tell whether this definition defines the answer.

'republican playing silly interrupting to propose' is the wordplay.
'republican' becomes 'R' (abbreviation in US politics).
'playing' indicates an anagram.
'interrupting' indicates putting letters inside.
'to propose' becomes 'table' (as in tabling a motion).
'silly' is an anagram of 'isyll'.
'r'+'isyll'='risyll'
'risyll' put inside 'table' is 'TRISYLLABLE'.

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I've seen this clue in The Independent.
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