anxiety about things that are unfamiliar or uncertain
тревога по поводу незнакомых или неопределённых вещей (trevoga po povodu neznakomykh ili neopredelennykh veshchey)
"Many people avoid change because of their fear of the unknown."
"Многие люди избегают изменений из-за их страха перед неизвестностью." (manye lyudi izbegayut izmeneniy iz-za yikh strakha pered neizvestnost'yu)
someone who acts independently and ignores rules
to solve a complex problem or mystery
to start a friendship
to achieve a position of advantage or superiority
something very pleasing to hear
still healthy and full of life