1‘unbiased professional advice’
impartial, unprejudiced, non-partisan, neutral, objective, outside, disinterested, without fear or favour, dispassionate, detached, unswayed, even-handed, open-minded, equitable, fair, fair-minded, just
informal on the level, with no axe to grind, sitting on the fence
biased, partisan, prejudiced
We take a look at several popular, though confusing, punctuation marks.