contend: afirmar que, sostener que

contend    
    1 contend   contends   contending   contended
If you have to contend with a problem or difficulty, you have to deal with it or overcome it.
   It is time, once again, to contend with racism.
   American businesses could soon have a new kind of lawsuit to contend with.
VB

    2 contend   contends   contending   contended
If you contend that something is true, you state or argue that it is true. (FORMAL)
   The  government contends that he is fundamentalist.
   `You were just looking,' contends Samantha. `I was the one doing all the work.'
VB

    3 contend   contends   contending   contended
If you contend with someone for something such as power, you compete with them to try to get it.
   ...the two main groups contending for power.
   ...with 10 UK construction yards contending with rivals from Norway, Holland, Italy and Spain.
   ...a binding political settlement between the contending parties.
V-RECIP

Collins Dictionary