holocaust n.

  1. N-VAR A holocaust is an event in which there is a lot of destruction and many people are killed, especially one caused by war.
  2. N-SING The holocaust is used to refer to the killing by the Nazis of millions of Jews during the Second World War.

sanitation n.

N-UNCOUNT Sanitation is the process of keeping places clean and healthy, especially by providing a sewage system and a clean water supply.

sullen adj.

  1. ADJ-GRADED Someone who is sullen is bad-tempered and does not speak much.

unanimous adj.

  1. ADJ-GRADED When a group of people are unanimous, they all agree about something or all vote for the same thing.
  2. ADJ A unanimous vote, decision, or agreement is one in which all the people incolved agree.

ozonosphere n.

succinct adj.

  1. ADJ-GRADED Something that is succinct expresses facts or ideas clearly and in few words.

sloppy adj.

  1. ADJ-GRADED If you describe someone's work or activities as sloppy, you mean they have been done in a careless and lazy way.
  2. ADJ-GRADED If you describe someone or something as sloppy, you mean that they are sentimental and romantic.

trickle vi./n.

  1. V-ERG When a liquid trickles, or when you trickle it, it flows slowly in very small amounts.
  2. VERB When people or things trickle in a particular direction, they move there slowly in small groups or amounts, rather than all together.

propagate vi./vt.

  1. VERB If people propagate an idea or piece of information, they spread it and try to make people believe it or support it.
  2. VERB If you propagate plants, you grow more of them from the original ones.

euphonious adj.

conscientious adj.

  1. ADJ-GRADED Someone who is conscientious is very careful to do their work properly.

dissemble v.

  1. VERB When people dissemble, they hide their real intentions or emotions.

excitement n.

  1. N-VAR You use excitemetn to refer to the state of being excited, or to something that excites you.

assault n./vt.

  1. N-COUNT An assault by an army is a strong attack made on an area held by the enemy.
  2. ADJ Assault weapons such as rifles are intended for soldiers to use in battle rather than for purpose such as hunting.
  3. N-VAR An assault on a person is a physical attack on them.

broccoli n.

  1. N-UNCOUNT Broccoli is a vegetable with green stalks and green or purple tops.

terrestrial n./adj.

orator n.

malevolent adj.

afflict vt.

authoritative adj.

pierce n./v.