Inflexible (5)
'inflexible' is the definition.
(I know that inflexible can be written as rigid)
This is the entire clue.
(Other definitions for rigid that I've seen before include "Stiff, unyielding" , "Stiff, unbending" , "strict" , "unwilling to move" , "Unable to bend" .)
'inflexible' is the definition.
(similar in meaning)
This is all the clue.
(Other definitions for stiff that I've seen before include "Awkward" , "Not easily bent" , "tough" , "Formal" , "Starched, rigid" .)
'inflexible' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for obstinate that I've seen before include "Female bird" , "Firm" , "Inflexible" , "Blindly stubborn" , "Stubbornly persistent" .)
'inflexible' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for rigorous that I've seen before include "Severe, precise" , "Rigid, stringent" , "Austere" , "Exhaustively accurate" , "Allowing no deviation from a standard" .)