certify [sartafai] v.
To certify something means to confirm that its results are true.
—► The photograph on her passport certified that she was indeed Jolene Sawyer.
collaborate [kalaebareit] v.
To collaborate means to work together on something.
—► When they collaborated, they managed to finish their chores early.compile [kampail] v.
To compile things means to collect a variety of them into a group.
—► She compiled a lis t o f people who she wanted to attend her birthday party.counteract [kauntarjfekt] v.
To counteract something means to act against it in order to reduce or stop it.
-* Medicine is supposed to counteract illnesses.Curb [ka:rb] v.
To curb something means to prevent it from happening or increasing.
—► She curbed her anger by listening to a relaxing song.diagnose [daiagndus] v.
To diagnose someone means to identify the medical condition they have.
—* Several o f the children were diagnosed with the flu.enact [insekt] V.
To enact something means to make it into a law.
—► The council enacted a law that would only allow buses to drive downtown.federation [fedareifan] n.
A federation is a group of states or businesses working for a common cause.
-> The United Nations is a federation designed to prevent war, disease, and famine.grOSS [grous] adj.
If something is gross, then it is disgusting.
—► The food was so gross that the dog couldn’t eat it without feeling sick.h u m a n e [/?ju:mein] adj.
If something is humane, then it is good and kind.
—► Helping build homes fo r poor people is very humane.