val ‧ i ‧ ant /ˈvæliənt/ BrE AmE adjective
[ Date: 1300-1400 ; Language: Old French ; Origin: present participle of valoir 'to be of worth' , from Latin valere ; ⇨ VALOR ]
very brave, especially in a difficult situation SYN courageous :
Tarr threw himself in front of a train in a valiant effort to save the child.