Книга Total English - Средне-выше среднего - Блок 6 – Словарь

someone who does not express emotions and is considered unfriendly

недружелюбный

a tough person who is not easily affected by emotions

умственно выносливым

a person or thing that causes one great annoyance or a lot of difficulty

Быть раздражающим человеком

used to refer to an individual with a positive intention to do good things and help other people

имеет добрые намерения

difficult to deal with

someone who is likely to succeed because of their ambitiousness or capabilities, particularly in their career or education

высокого полета

someone who actively avoids having any interaction with others

одиночка

someone who is difficult to please or deal with, and is often demanding or critical in their expectations

непокладистый человек