Whats the rule that makes "please" pronounced the same as "pleas"?
13.06.2025 11:49

You'll usually find your answer there.
Please is an anglicization of the French word plaisir.
Whence the <ea> I cannot say but some other words that were spelled <ai> in French are spelled <ea> in English: aise → ease, graisse → grease, fait → feat.
While you may reasonably ask why words are spelled the way they're spelled, it makes no sense to ask why they're pronounced the way they're pronounced.
What's (not “whats”) the rule?
There's no rule.
Pleas is spelled <pleas> because it's the plural of pleas.
Words are pronounced the way that they're pronounced.
Back in the day (circa 1300), it was written <plesen>.
What thing happened to you as a child that you haven’t let go of to this day?
If you're curious about why a word is spelled the way it's spelled, your first recourse should be etymonline dot com.