rightly

Etymology

right + -ly

adv

1. In a right manner, correctly, justifiably.
   She was quite rightly disappointed in not being promoted.
   I don't rightly know what he meant by that remark.
   If rightly used, it will save a great deal of money in every household. 1909, Sidney Morse, An Encyclopaedia of Practical Recipes and Processes, The Success Company, page 21
   Mother very rightly resented the slightest hint of condescension. She considered that the exclusiveness of Peter's circle was due not to its distinction, but to the fact that it was an inner Babylon of prodigality and whoredom,[…]. 1922, Ben Travers, chapter 2, in A Cuckoo in the Nest
   Steven Fletcher headed in for Wolves late on, who were denied a penalty and what appeared to be a legitimate equaliser in stoppage time. Wolves boss Mick McCarthy will rightly be aggrieved by those two decisions. October 1, 2011, Saj Chowdhury, “Wolverhampton 1-2 Newcastle”, in BBC Sport