to contact or communicate with someone
связаться (svyazatsya)
"I’ll get in touch with you tomorrow."
"Я свяжусь с тобой завтра." (Ya svyazhus s toboy zavtra.)
too difficult to understand or achieve
in a difficult or tricky situation
someone who is emotionally strong and unyielding
very cowardly
to take a foolish risk that may bring bad luck
to speak confidently about something