In this particular case, "makeup" (without the hyphen) is synonymous with "cosmetics" while "make-up" (with the hyphen) is a compound adjective, e.g., "make-up prayer". And "make up" is an action "I want to make up a prayer".
Update: I've manually edited out the make-up tag. Please use cosmetics (for the stuff you put on your face) or salat-qada (for catch-up prayers) instead.
The "make-up fast" questions can be just tagged sawm ("fast"):
Which order to perform quda (catch-up) fasting and Shawwal fasting according to the Hanafi madhab?
Do you have to make up a broken optional fast?
If, as the site develops, we require a "sawm-qada" tag, or something like that, we can add it without it being a big deal.
Useful actions:
Manually edit. I.e., go through the posts one by one, getting rid of it. When doing this, we should simultaneously polish the content of the post.
This is probably the best method, and with make-up having 9 questions, it's not too much of a problem to edit them individually (it's on my to-do list).
This is suitable if the tag is only used under 20 or so times, otherwise it's too disruptive (and might be worth an individual meta post).
Synonymize. Make the tag a synonym of the tag which it is most frequently used as a synonym of. (And manually fix the others.) E.g. Let's make "charity" a synonym of "sadaqah"?. This also prevents future attempts to use the tag, since it will be replaced by it's "master" tag.
This method is currently largely dysfunctional (due to lack of active and sufficiently high-reputation users), except with diamond moderator intervention.
Edit the tag wiki excerpt. We can (and should) add descriptions as to how tags should be used, along with identifying appropriate alternative tags, to their tag wiki excerpts:
Provide basic guidance on when to use the tag. In other words, what kinds of questions should have this tag?
Very few tags have appropriate tag wiki excerpts currently. woman has a reasonable tag wiki excerpt: "Questions about or that apply specifically to women."
Probably-more-trouble-than-they're-worth actions:
- Burninate the tag, i.e., remove the tag from all posts. See When to burninate and What does it mean to "burninate" a tag? This is useful for widely used meta tags (like "homework").
It seems this needs StackExchange moderators. (The word "burninate" also seems to be used to mean "manually edit" above.)
- Blacklist the tag. Then the software will refuse to add that tag to questions. This is probably more appropriate for meta tags (see The Death of Meta Tags) which come up frequently, but which are useless.
It seems this needs StackExchange moderators (see meta.SE).
An alert community should be able to quickly remove a previously removed tag if it comes back. So these things should be unnecessary.
