zlacker

>>cosmoj+(OP)
I loaded up the suggested Webster's 1913 dictionary on my ereader to test it out. I picked two random words on the current page of the book I'm reading. Neither "condolences" or "constraint" were in that dictionary. Quality of definitions doesn't help if you don't have the quantity because the dictionary is over 100 years old.

I also agree with other commenters regarding the OED.

>>Aprech+N21
I just checked the copy of Websters Revised Unabridged Dictionary (1913) I loaded into a free app from the URL included in the article. "Condole", "condoled", "condolement", "condolence", "condoler", "condoling", "constrain", "constrainable", "constrained", "constrainedly", "constrainer", "constraining", "constraint", and "constraintive" are all present when searching for the root of both of those words. You can also search here:

https://www.websters1913.com/words/Condolence

https://www.websters1913.com/words/Constraint