overwhelming
adjective
ˌəʊvəˈwelmɪŋ 
ˌoʊvərˈwelmɪŋ very great or very strong; so powerful that you cannot resist it or decide how to react
The evidence against him was overwhelming.The overwhelming majority of those present were in favour of the plan.an overwhelming sense of lossShe had the almost overwhelming desire to tell him the truth.You may find it somewhat overwhelming at first.There was overwhelming support for our policies.overwhelmingly ˌəʊvəˈwelmɪŋli ˌoʊvərˈwelmɪŋli 