・パス単：His mother begged him to study but he was impervious to her appeals.
・単熟語EX：The company is impervious to outside criticism.
・パス単：Weather forecaster warned of an impending storm from the hurricane.
・単熟語EX：What can be done to avoid the impending disaster?
・パス単：Most seismologists predict that a big earthquake is imminent in the country.
・単熟語EX：There was no imminent danger to residents in the area.
・パス単：Despite years of frugal management, the company is still struggling.
・単熟語EX：The frugal man finally built his own house.
・パス単：Even after he made his fortune, he remained very thrifty about money.
・単熟語EX：After losing her job, she was thrifty.
・パス単：The accused man was adamant that he was innocent despite the evidence against him.
・単熟語EX：The politician was adamant that he would not resign.
・パス単：She knew that her husband, with his obstinate character, would be difficult to persuade.
・単熟語EX：He is very obstinate when he wants to do something.
・パス単：Her husband’s stubborn refusal even to listen to her suggestion infuriated her.
・パス単：Political meetings hardly ever seem to be constructive and candid.
・単熟語EX：The boss gave her candid advice.
・パス単：Despite his fame, the scientist meekly accepted the student’s criticisms.
・単熟語EX：She meekly accepted the suggestion.
・パス単：As a population grows more affluent, it naturally begins to buy more luxury goods.
・単熟語EX：She grew up in an affluent family.
・パス単：Sometimes we tire of superfluous rules and regulations.
・単熟語EX：All software has superfluous functions.
・パス単：He was so engrossed in the movie that he failed to hear the doorbell.
・単熟語EX：He was so engrossed in the book that he couldn’t hear the phone ringing.
・パス単：Her exuberant and passionate acting debut won her wide acclaim.
・単熟語EX：The crowd of nearly 1,000 exuberant fans cheered the team.
・パス単：With his rural background, he found it hard to adjust to the frenetic pace of the city.
・単熟語EX：Many people are tired of the frenetic pace of modern life.
・パス単：The student became infatuated with her glamorous literature professor.
・単熟語EX：Many young people were infatuated with the rock band.
・パス単：When the president saw the excellent sales figures, he felt ecstatic.
・単熟語EX：She was ecstatic to have passed the exam.
・パス単：He assured me that things were fine, but I remained somewhat dubious.
・単熟語EX：I am dubious about his success.
・パス単：He felt ambivalent about his promotion because it would involve more work.
・単熟語EX：She seems to feel ambivalent about his proposal.
・パス単：Peace in this country depends on a precarious balance of force and diplomacy.
・単熟語EX：This country’s economy is in a precarious situation.