Is there a reference that lists words whose honorific and/or humble forms are suppletive?
- For nouns, I am supposing that 父親, 父, and お父さん are different forms of a single noun differing only with respect to honorification.
- For verbs, there are rules to create the honorific form, but some verbs are irregular. For example, the honorific and the humble forms of 食べる are 召し上がる and いただく, respectively. Another example is 知ります with ご存知です as the honorific and 存じております as the humble form.
How can I know whether a verb or noun is regular or it uses suppletion?