Based on sound reasoning or evidence.
1However, my explanation for making ten-year-olds run wind sprints was always well-founded.
2Two weeks later, it's evident fears of a pandemic rebound were well-founded.
3I was appalled, firstly from timidity, secondly out of very well-founded modesty.
4In some respects, this degree of confidence in the euro is well-founded.
5The captain replied, that he was afraid his apprehensions were too well-founded.
6I'm not all that convinced as to how well-founded those fears are.
7No doubt the missionary was right and my father's fears were well-founded.
8Facts seemingly contradict facts, well-founded theories contradict other theories as well founded.
9They wanted to be off, and hoped Cora's observations were not well-founded.
10Some of their grievances with Barack Obama's twice-elected running mate are well-founded.
11But one cannot discount the villagers' well-founded fear and common sense.
12Eide warned last week that opposition fears of an unfair poll were well-founded.
13When it comes to the latter, that faith is mostly well-founded.
14She yielded to France her own well-founded claims to political influence in Morocco.
15And he knew now that it had been a well-founded prescience.
16Electoral Saxony and Mecklenburg have well-founded pretensions, even if Zweibrucken were not existing.