3. enables
Definition: makes someone or
something able to do an action
Sentence: E-mail enables my
grandmother in Los Angeles to stay in
contact with me.
Synonyms: allow
4. mucus
Definition: a slimy substance produced
in the nose and throat to moisten and
protect them.
Sentence: When you have a cold,
mucus fills your nose.
Synonyms: slime
5. scarce
Definition: hard to get; rare
Sentence: Water is scarce in the a
desert, so carry plenty of water if you
go hiking.
Synonym: rare
Antonym: common; abundant
6. specialize
Definition: to do one thing extremely
well
Sentence: Doctors specialize in
different areas of medical practice.
Synonyms: focus on
7. sterile
Definition: free from germs
Sentence: To avoid getting an infection
when you have a cut, use sterile
bandages.
Synonyms: germ-free
Antonym: infected