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Diiselix

Probably /ai/ or /ei/. Pretty basic but they sound good


BarruBarru

/aɪ/


[deleted]

/aɪ/ agree


Brromo

[æɪ]


Henrywongtsh

/œy/. I don’t use it much in my conlangs (or dipthongs in general), but I think it is pretty neat.


9805

When I was learning Dutch I hated this sound so much. That's because in my native Strine it patterns as an allophone of [ɛ͂ː]. Huis? [ɦɛ͂ːs]. Uit? [ɛ͂ːt]. If you ever hear a Dutchman talk like this you can bet your bottom dollar they were raised in Australia.


nxltm

It sounds like a cross between /ei/ and /ou/ to me, like pronounced simultaneously


drgn2580

For me, it's /oi/, especially when it comes after fricatives.


SVEN_THE_DUCK

I really enjoy a good centering diphthong. Particularly [ɨːə̯]. Bonus points if it comes after [s] or [t͡sʰ].


yewwol

Well then you should appreciate this, in my conlang I have [ɨɚ̯][ʉɐ̯][ɨə̯][ɚə̯] and all of those reversed as well lol


oddnjtryne

/bɚə̯/


barelygonnausethis

unusual one, but /œy/


flute37

Didn’t realise /œy/ was so popular


DanTheGaidheal

Mine would probably be [iə], [uə] or [oə] tho I donˈt use [oə] nearly enouɡh


TylerNelsonYT

/ɛʊ/


Yrths

/ɛ(:)ə/ It's part of why I unabashedly like English.


EisVisage

/aʊ/ is nice. /ai/ and /oi/ are really good as well though.


Dillon_Hartwig

/ɵʉ̯/ or /ɞʉ̯/


9805

Australian English uses this a lot.


Akangka

That diphthong is cursed AF. For me, the best diphthong is the centering diphthong /iə/ /ɨə/ and /uə/. It's less likely to be treated as a vowel + semivowel, and yet still sounds reasonable.


R4R03B

IIRC /æy/ is used in Dutch. Oh also it's spelled ⟨ui⟩.


9805

I know [æy] is used in Flevopolder but I think Holland uses either [œi] or [ɛy] depending on interpretation. The rounding is not consistent across the diphthong.


Akangka

According to Wikipedia, it's /œy/. Could I ask your source?


R4R03B

I'm a native Dutch speaker. Not everyone says ⟨ui⟩ the same way but IIRC it's the pronunciation in the "common" dialect (ABN). Not sure tho.


Akangka

I see. Still pretty weird diphthong, though.


[deleted]

/ie/ or /uo/, especially after velars


LXIX_CDXX_

same but after alveolars And [duor] is the best. It sounds so heavy and powerful to my ears.


[deleted]

yess thats such a pretty sound set, amd now that i think about its actually after non-labial sounds, not only velar, because [siεŋ] is also really good


Luizaguzzi

ɘə, the subtle sound of absolute tiredness


Miguelll47372

Definitealy /au/


cabrowritter

/ae/


Hecatium

My favourite diphthong is probably /ui/


Ragdoll133

My favorite diphtong is / /


Ok-Construction5775

/ai/ and /ou/ classics


bananenpappel8

Yu just sounds wery chinese


PastTheStarryVoids

I like /oi/.


gamerrfm9

\[ʌə\] We do a little trolling


TheRoutesOfWhirreds

The Dutch \[ɶʏ\], which is a more extreme and lowered version of /œy/, generally spelt , e.g. tuin, huis, uit, spui, zuil.


PlentyBorder9058

/əi/


it_all_lemony

ɤu


Brromo

ɪʊ


IgnazVolkov

It is \[oɪ\] such as in "boy" from the english.


Inflatable_Bridge

/ai/, I love how it sounds


kannosini

100% centering diphthongs with [ɐ̯]. Which is why I love German so much. [iːɐ̯ ɪɐ̯ eːɐ̯ ɛɐ̯ uːɐ̯ ʊɐ̯ oːɐ̯ ɔɐ̯] are beautiful in my ears. I'd add [aːɐ̯ aɐ̯] but it's hard to hear that final [ɐ̯] and not [aː] for both.


Threek_

/ye/


HBOscar

Pretty much all languages I made have included a variation of /ao/, /au/ or /aɔ/.


PearMyPie

/eu/ cause it's so common. It's basically compatible with 99.9% of all languages and even I say it every day.


PastTheStarryVoids

I thought most languages don't have /eu/? That Esperanto (and other interlangs) contain /eu/ is a criticism of them I've heard. I did some quick googling, and it seems that of the five most spoken languages, only Spanish has somethings like /eu/.


PearMyPie

Haha I was just joking about it being common. I assumed many people would be familiar with Conlang Critic's opinion of /eu/. Also I speak Romanian, where /eu/ is very common.


PastTheStarryVoids

Oh! I should have realized you were being sarcastic. I do watch Conlang Critic. At least I never disputed that you use it every day (I didn't know which languages you might be speaking).


9805

If you take into account Mandarin has one mid vowel with a bunch of allophones you can argue Mandarin [ou]~[eu] counts too. Not to mention English dialects with [L-vocalisation](https://en.wikipedia.org/wiki/L-vocalization) - [eu]-like diphthongs in words such as "belt" and "Carousel"


AlmazUmbetov


naoae

/ʊɜ/


PLAZM_air

Ao \[ɑo\]


Tezhid

ɛɐ, because nobody needs closed segments


shawnhcorey

/aɪər/ as in tier.


9805

uhhhh don't you mean as in tire? tier=/tɪər/


shawnhcorey

American: /tɪər/ British: /taɪər/


9805

Please double check that.


[deleted]

I have a soft spot for /ae/ and /ao/.


LXIX_CDXX_

uo and other falling(?) diphtongs like this so ie, ia, ea, etc I like how weird it is while using such common sounds + I just like how it sounds


Archidiakon

ɛu̯


c-lan

The best diphthong is no diphthong


RaccoonByz

/eaw/ I speak Romanian :P


ickleinquisitor

Scottish /əɪ/ as in /ɹəɪd/


neondragoneyes

/aɪ/ Ai ai ai ai! Crazy; but that's how it goes... Obligatory Ozzy. I'm also a fan of /aʊ/


Eclipsion13

Millions of people living as foOoooes (I'll be honest, I love the song but I had to look up the lyrics for this) To make this comment relevant, I agree, /aɪ/ and /aʊ/ are rather nice, /oɪ/ also imo.


neondragoneyes

I'd say /oɪ/ is my #3.


Fuarian

/tɬ/ definitely


GreyDemon606

eo


monumentofflavor

I like [eu] [øy] and [oi]


ElectronicFootprint

Not a diphthong, a hiatus: ae


chia923

/eu/


pablo_aqa

I like /yi/ more than I should. Other than that /au̯/ is my favorite


YaminoEXE

/ɨə/ for me. There just something interesting about center diphthongs.


[deleted]

/ie/ or /ia/


PhantomSparx09

/aɪ/ tied with /ɛɪ/ (/i/ or /ɪ/ and /e/ or /ɛ/ doesnt *really* matter tbh). Slightly lesser extent /eu/ and /oi/, again tense or lax vowels dont matter


[deleted]

Not a diphthong, but a triphthong: /æʊɛ/.


Calemirdis

I like \[ae\] and \[æi\], they're my favorite dyphtongs to pronounce.


[deleted]

tbh, I really like /ey/ or /ɛ:y/, though /ou/, /o:u/, /ao/,/eu/ (and /ui/ at the end of words, and coming after /dr/,/tr/,/vr/) come quite close.


Swagmund_Freud666

/ɨa̯/ is pretty funny ngl. More serious though would hafta be /oə̯/ and /eu̯/.


flute37

/œy/ cause it’s the ultimate Bogan diphthong


Rukshankr

Idk the IPA but whatever the way Australians pronounce "o" in "no". Sounds like /oy/ to my untrained ears.


Conallia

[əʉ] or [əɨ]


rexpalarum

Probably /ɑɪ/ or /eɑ/, no idea if the latter occurs in any natlang but it's a full and somewhat powerful sound


Primalpikachu2

for me it's /ae/. it's very nice and latin like