sub ‧ due /səbˈdjuː $ -ˈduː/ BrE AmE verb [transitive]
[ Date: 1300-1400 ; Language: Old French ; Origin: soduire 'to lead into bad actions' , from Latin subducere 'to remove' ; influenced by Latin subdere 'to force to obey' ]
1 . to defeat or control a person or group, especially using force:
Police managed to subdue the angry crowd.
Napoleon subdued much of Europe.
2 . formal to prevent your emotions from showing or being too strong SYN control :
an excitement she could not subdue