[Aspell-user] considering word in master dictionary misspelled?

[Karl Berry]

The word "wold" (wolds, wold's) is in the Aspell master English
dictionary (aspell -d en dump master | aspell expand | grep wold).

I would like to consider this word as a misspelling, i.e., as if it were
not in the master dictionary, so that
  echo wold | aspell list
would output "wold" instead of being silent.  (In my world, "wold"
is always a misspelling of "would", not the Old English word for a wood.)

Short of dumping all the words, removing the wold variants, and making a
new custom dictionary, is it possible?  For example, is there some way
in a personal dictionary, or some other file, to "override" (excise,
remove) an existing master dictionary entry?

I looked in the manual and did various searches to no avail.  One person
with essentially the same question did end up making a new dictionary:
https://ryanveach.com/146/aspell-custom-dictionary/

Any info appreciated.  --thanks, karl.