I think I would use matinal, which the OED holds to have the same meaning as matutinal. However the latter they designate as now chiefly literary.
The examples they provide, for matinal across three main senses, are as follows:
= matutinal adj. 1.
1803 M. Charlton Wife & Mistress (ed. 2) II. i. 11 To attend the
matinal déjeuné's of ...
You could say it was a “faux pas“ or a “gaffe” because it was a socially awkward blunder. You could describe the remark as “gauche” or, a bit less harshly, as “clumsy.”
If you’re particularly looking to describe the person, not the action, you could call them “careless,” “thoughtless,” “inconsiderate,” or “graceless.”
I don’t know about its currency in discourse outside the field of Information Technology, but it’s quite common within the field to refer to code or programs that fit your definition as “legacy” code. If someone were to refer to “hands” (as used for measuring the height of a horse) as a “legacy unit”, I would ...
That's referred to as a proprietary eponym:
A successful brand name or trademark that has come into general use to refer to the generic class of objects rather than the specific brand type, without the exclusive rights to said product being lost by the parent company.
Here's a long, alphabetized list of examples.
If you're willing to be obscure, "auroral" can mean "of or pertaining to the dawn" (from the Roman goddess of the dawn), though this usage is swamped by the atmospheric phenomenon. The variant "aurorean" is more restricted to the dawn meaning, but is also even more obscure.
(The Cambridge dictionary doesn't have the dawn meaning nor "aurorean"; Merriam-...
Obtuse may work, as it can refer to insensitivity as well as the lack of wit or smarts of someone who demonstrates such insensitivity. Merriam-Webster:
2a : lacking sharpness or quickness of sensibility or intellect : insensitive, stupid
He is too obtuse to take a hint.
So to include that in your present example, obtuse would describe ...
There's nothing rude about the word "leave". What might be impolite about saying
I'm leaving now,
is not the word "leave", but the fact that you're leaving abruptly in the middle of something without apologizing for it. You could say
I'm really sorry, but I need to leave now,
I wish I could stick around, but I have to go,
or something ...
No they aren't synonyms and yes there is a difference (do try to phrase the question in the heading in the same way as in the body of the text).
Blackmail means attempting to make someone do (or not do) something by threatening to reveal certain information. This information need not be true but will cause damage.
Extortion means attempting to make ...
Consider holdover. Although primarily used to refer to people from a previous administration, it can be used for anything that continues to persist beyond its usefulness.
A person or thing surviving from an earlier time, especially someone surviving in office or remaining on a sports team.
‘But in reality, Daylight Savings Time is an archaic holdover ...
Vestigial seems to be precisely the concept you are going for.
The noun form of vestigial is vestige, but it accentuates the meaning you impute worse than vestigal does and it does not fit your example sentence's phrasing.
We have many measurements of elbow diameter not because it is particularly useful, but for historical reasons. The measurements are a ...
Etymonline has this for the word yes:
Old English gise, gese "so be it!," probably from gea, ge "so" (see yea) + si "be it!," from Proto-Germanic *sijai-, from PIE *si-, optative stem of root *es- "to be." Originally stronger than simple yea. Used in Shakespeare mainly as an answer to negative questions....
For what it's worth, yea is ...
(1) An offer is open-ended; it puts something in front of another person leaving that person free to accept or reject the offer.
E.g. "We offer several afternoon activities for you to consider." "Please offer a cold drink to our guests."
(2) A suggestion is a soft way of presenting an idea for something to happen; you may hear people say, "Never mind, it ...