Definition of "unwilling"

There was a prevailing fear of the effect of large undertakings becoming monopolistic, and Parliament showed itself unwilling to sanction any large groupings.

1948 January and February, “British Railways”, in Railway Magazine, page 1

[...] but in the damp conditions prevailing the driver sensibly was unwilling to attempt the climb up through Combe Down tunnel without help, for fear of slipping to a standstill in the unventilated bore, [...].

1960 March, “Motive Power Miscellany: Western Region”, in Trains Illustrated, page 184