to prevent something from happening
предотвратить что-то от случения (predotvratit' chto-to ot slucheniya)
"Early communication can head off most misunderstandings."
"Раннее общение может предотвратить большинство недоразумений." (rannye obshcheniya mogut **golova ot** bol'shinstvo nedorazumeniy.)
to support or defend something you believe in
to reveal a secret by mistake
a sudden and unexpected event
to examine something carefully for mistakes
the influence that other people’s actions have on one’s own...
To do exactly what you say you’ll do.