1.escort(noun):a group of persons
Synonyms:attendant,bodyguard
Antonyms:enemy,foe
Example Sentence:During the summer I was detailed to escort a deserter to Plymouth.
2.eternity(noun):infinite time
Synonyms:aeon,afterlife
Antonyms:continual,ever
Example Sentence:It is an edifice that seems to have been constructed for eternity.
3.nasty(adjective):physically filthy
Synonyms:awful,dirty
Antonyms:agreeable,calm
Example Sentence:It was a nastynight for any sort of a sleeper; for a dead one it was very bad.
4.unendurable(adjective):capable of being endured
Synonyms:bearable,livable
Antonyms:changeable,intolerable
Example Sentence:So far the situation was endurable, but it could not continue indefinitely.
5.weasel(noun):a cunning, sneaky person
Synonyms:betrayer,blabbermouth
Antonyms:come out,concede
Example Sentence:It was the same leaf as the weasel had brought to his comrade.