Hardy, British during tours abroad (6)
I believe the answer is:
robust
'hardy' is the definition.
(similar in meaning)
'british during tours abroad' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'during' indicates putting letters inside.
'abroad' indicates an anagram (abroad can mean moving around).
'tours' anagrammed gives 'roust'.
'b' going into 'roust' is 'ROBUST'.
(Other definitions for robust that I've seen before include "Study and durable" , "Strong and healthy" , "Rugged and sturdy" , "Forceful" , "Hardy and vigorous" .)