ЯВНО _|_ EXPLICITLY, CLEARLY / YAVNO [ˈjavnə]
Hint with an alternative definition: In an evident way that is easily perceived or understood, it is like «I know the way!» or it is an overt, avowed, fine knowledge that is visible to anyone near.
Hints with translation + consonant words (by sounds or letters): heaven is bright (visible and with no evil riddles) and hell is dark
Russian pro—tip: я + во вне и в… = реальность
Mental visualization: Я (spotlight) + Вн (books) + O (magnifying glass) = explicit information