Just curious about something, because if you use jisho, you are able to find there are a LOT of な-adjectives, while if you look at this handy resource, All Na-Adjectives Course | Marshall's Site, claims there is only 800 of them. I was just wondering if someone could shine the light on how many there might actually be? Thanks 
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One made by the same guy also claims there is only 520 い-adjectives
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Jisho lists 5,681 な-adjectives. This is not definitive, language being what it is, the only language you could exhaustively enumerate is a dead one, but that’s a lower bound. Similarly it has 2,186 い-adjectives
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that’s a lot, thanks
I better keep that bookmarked
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I remember reading somewhere that い - adjectives actually are closed list - all new adjectives are な - adjectives.
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Counter-point: チルイ, recognised by dictionary makers in 2021.
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Counter point na adjectives and nouns are basically the same thing
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Counter point, talking about japanese in terms of English grammar will always be misleading. I’ve always been partial to calling these words na-nominals, but there are as many opinions as this as you can shake a stick of linguists at.
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Yeah, I was kinda being flippant that way
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Replied to the wrong post? Doesn’t see to actually be a counter point to the idea that there are in fact new い-adjectives.
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Nah, i’m just a nuisance
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So after all ther are new い - adjectives? Interesting indeed. Thanks. Now I wonder where the information about now new ones did come from.
I don’t have anything productive to add to the な-adjective conversation, but it does remind me of how most new verbs in Spanish tend to take the -ar form. Language!
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spanish verbs can take the infinitives endings
-ar, -ir, and -er
depending on the ending you conjugate them differently 
I’m pretty sure french has something simular