There are plenty of non-dictionary linguistic sources out there that corroborate, but I’m not going to waste my time spoon feeding them to you when clearly you’re incapable of admitting when you’re wrong. “Till” is not an abbreviation. You made that assertion up all on your own. And I’m certainly not going to trust someone who doesn’t even know when it’s proper to capitalize words.
Here’s Grammar.com saying the same: https://www.grammar.com/usage_and_difference:_till,_until,_'til (you have to copy/paste the entire link - Lemmy is fighting me on the URL format).
There are plenty of non-dictionary linguistic sources out there that corroborate, but I’m not going to waste my time spoon feeding them to you when clearly you’re incapable of admitting when you’re wrong. “Till” is not an abbreviation. You made that assertion up all on your own. And I’m certainly not going to trust someone who doesn’t even know when it’s proper to capitalize words.