The phrase "believable sense" refers to something that seems trustworthy or logical. It means that the information or idea presented is realistic and can be accepted as true or reasonable. Full definition
She also displayed a much more believable sense of terror and horrified anxiety then most of the young actresses put in these types of roles nowadays. (slickstermagazine.com)
This lack of subtlety continues with the sort of overly on - the - nose speech about the lead character's youthful dissatisfaction with authority that we've seen many times before, falling well short of Attack The Block's similarly rooted but far more believable sense of arguably misguided yet relatable honour. (nerdlocker.com)
From its excellent visual approach, production design and score to its witty dialogue, clever plotting and uniformly excellent acting, Richard Ayoade has taken the time to carefully construct a fully realized, living and breathing world that feels genuine in its own twisted little way, The story is a solid interpretation of the source material, with a smart plot arc and fully believable sense of existential dread that comes from one's life being turned on its ear in the most surprising of ways. (alphaprimitive.com)