C1 complete(ly): The conductor waited for dead silence before commencing the performance. You won't be able to change his mind - he's dead against the plan.informal I'm dead certain I left my purse on the desk.informal I'm dead (= very) hungry.informal The exam was dead (= very) easy.UK informal "How was the film?" "It was dead good." The post office is dead (= straight) ahead. Aim for the dead (= exact) centre of the target. I always try to arrive dead (= exactly) on time. Martha's dead set on having (= very much wants to have) a new bike. He's dead set against (= completely opposed to) living in the city.Complete and wholeVery and extreme