Crossword Genius

Steadfast astronaut losing limb (6)

Ross

I believe the answer is:

strong

'steadfast' is the definition.
(thesaurus)

'astronaut losing limb' is the wordplay.
'astronaut' becomes 'armstrong' (Neil Armstrong).
'losing' indicates named letters should be taken away.
'limb' becomes 'arm' (arm is a kind of limb).
'armstrong' with 'arm' removed is 'STRONG'.

(Other definitions for strong that I've seen before include "Powerful; full-flavoured" , "Potent" , "muscular or concentrated" , "Resilient" , "Vigorous" .)

I've seen this clue in The Times.
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