Crossword Genius

Untiring when debating life travelling round America (13)

Ross

I believe the answer is:

indefatigable

'untiring' is the definition.
(thesaurus)

'debating life travelling round america' is the wordplay.
'travelling' is an anagram indicator.
'round' is an insertion indicator.
'america' becomes 'a' (common abbreviation - e.g. in organisation names).
'debating'+'life'='debatinglife'
'debatinglife' with letters rearranged gives 'indeftigable'.
'indeftigable' going around 'a' is 'INDEFATIGABLE'.

'when' is the link.

(Other definitions for indefatigable that I've seen before include "Relentless" , "Tireless" , "Persistent" , "with no end of energy" , "Persisting tirelessly" .)

I've seen this clue in The Independent.
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