jemandem reinen Wein einschenken — to pour someone pure wine. Duden: to tell someone the full truth, even when it is unpleasant.
etwas durch die Blume sagen — to say something through the flower, to hint at it. Duden lists durch die Blume among the synonyms of andeutungsweise, by way of a hint, next to vage, unklar and verschwommen, vague, unclear and blurred.
unverblümt — without flowers, open and blunt
um den heißen Brei herumreden — to talk around the hot porridge, to avoid the point
schönreden — to talk something pretty, to gloss over it