Is the word "obligate" a common word? [STRIKE]Do[/STRIKE] Is there any synonym ([STRIKE]with[/STRIKE] for obligate) that is [STRIKE]used[/STRIKE] more common?
Yes, obligate is a common word, especially in formal conversation or writing. In the US and, regrettably, in the UK. ;-)
However, the word require is probably a more common synonym.