Definition of knightliness in US English:

knightliness

noun

  • See knightly

    • ‘Through such references, the reader is made aware that Perceval's transformation is not yet complete, despite the fact that other characters within the romance seem now to accept his knightliness at face value.’
    • ‘If Lanval's mysterious lady is beautiful and generous, she also takes his knightliness from him.’

Pronunciation

knightliness

/ˈnītlēnəs//ˈnaɪtlinəs/