1 point
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The correct way would be “drive-through.”
“Drive-thru” is purposely spelled wrong to attract attention. The same as “Krispy Kreme” or “Dunkin’ Donuts.” It’s only “correct” in that it has become ubiquitous through usage.
1 point
18 points
It’s only “correct” in that it has become ubiquitous through usage.
What you are describing is called “language”
“You” wasn’t always allowed to be singular. Colour vs color. Doughnut can be donut. Etc. Languages evolve over time, and “drive-thru” is in plenty of dictionaries.