candid

adj 1. free-spoken, straightforward, foursquare, sincere, outspoken, aboveboard, heart-to-heart, direct, forthright, open, genuine

2. informal, casual, impromptu, unposed, unplanned, spontaneous

3. just, impartial, fair-minded, unbiased, honest, fair, equitable

adj rostgoʻy, dangal, samimiy, sofdil, ochiq koʻngil

The noun is candour.