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Baby names

Find baby name inspiration and advice on the Mumsnet Baby Names forum.

Cassidy & Adelaide Siblings names

42 replies

Peaches1906 · 14/05/2026 09:13

Expecting our second daughter, do you feel the name Adelaide is nice & goes well with her sibling Cassidy?

I’m concerned it’s a little too ‘out there’, but do love it & struggling with any alternatives.

thanks!

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cloudysky75 · 24/05/2026 20:40

I love Avery and Addison! Adelaide is pretty.

LoudPlumDog · 23/05/2026 14:37

Both 3 syllables ending in different sounds, so it’s a yes from me.

RegalDiamondMonster · 23/05/2026 12:37

Adelaide is so much nicer than Avery.

Tellmetomorrow57 · 23/05/2026 09:04

Adelaide is nicer! Honestly I think they work really well.

Peaches1906 · 23/05/2026 08:56

Thank you all. I like Sydney but my husband doesn’t. We also like Addison but a family member has Addisons Disease so it feels odd. We do love Adelaide. How about Avery?

OP posts:
FoxHedgehogBadger · 23/05/2026 02:06

I think if anything, Cassidy is the more ‘out there’ of the two as it’s a more modern surname-as-first name choice, whereas Adelaide is very traditional and classic.

I actually think they sound great together, different vibes, but still somehow match really nicely and flow well when you say them together.

Heidi is the classic shortening of Adelaide but with your Cassie I think I would use Della for short.

Cassie and Della, perfect!

RogueFemale · 23/05/2026 01:53

How about Sydney?

SnowFrogJelly · 23/05/2026 00:29

TheBroonOneAndTheWhiteOne · 14/05/2026 09:40

Cassidy is a surname.

This

Dana92 · 23/05/2026 00:24

Adelaide is nice and Addie or Ada would be sweet nicknames. It's a different style to Cassidy but I don't think that matters. 😊

MiaKulper · 21/05/2026 12:44

Cassidy and Caroline like the twins in The Devil Wears Prada.

Dee51121 · 21/05/2026 12:03

I do agree with some that Addison more matches the vibe of Cassidy, rather than Adelaide. But if you call your daughter Cassie most of the time I don't think it matters that much.

rainingsnoring · 21/05/2026 09:18

I love the name Adelaide but it is a very totally style to Cassidy, which is a modern American type name. The sort of name that would go with Cassidy imo would be something like Harper or Taylor.

mathanxiety · 21/05/2026 01:10

Cassidy and Adelaide don't go together at all.

They are different in style. Cassidy is a surname name, quite modern when used as a forename, while Adelaide is a very traditional name used by middle class and UMC Victorians.

To go with Cassidy, how about:
Addison
Piper
Harper
Hailey
Holly
Quinn
Madison
Delaney
Lola

poppymango · 20/05/2026 19:17

Xmasallergies · 14/05/2026 20:58

It’s nice. Addison seems to go better maybe?

Oof no - makes me think of the taxi firm Addison Lee

poppymango · 20/05/2026 19:16

Cassie and Addie. I think it's cute!

Xmasallergies · 14/05/2026 20:58

It’s nice. Addison seems to go better maybe?

LilyLemonade · 14/05/2026 20:08

They are both lovely! A great combo. Both well-known but not overused; both a bit longer, multi-syllable, both feel both vintage and modern at the same time.

RegalDiamondMonster · 14/05/2026 17:22

I like Adelaide a lot. The only one I've met went by Addie.

Peanutlicious · 14/05/2026 16:52

I think they are both lovely names

user1492757084 · 14/05/2026 14:08

Cassidy and Adelaide are fine.

I prefer the full name Adele. It's fresh and less fussy.

IgnoreIt · 14/05/2026 13:30

Calliopespa · 14/05/2026 13:20

Yes, I like the Adelheid too, but Adelaide is the French version, and I'm not sure of your pronunciation ( it was my French Great Aunt's name) but it can be hard to tell with "MN phonics" (which mine were too!)

It's my (Parisian) best friend's mum's name -- she's originally from Alsace (and is vocal about having always hated her name!).

GingerBeverage · 14/05/2026 13:23

It’s nice, quite formal. I do prefer Adeline, as I think Lena is pretty.

Calliopespa · 14/05/2026 13:20

IgnoreIt · 14/05/2026 13:16

It's German in origin. Variant form of Adelheid (which was Heidi's real name in the Johanna Spyri novel -- nasty Fraulein Rottenmeier always calls her that).

The French version is Adéläide, pronounced more 'A-dell-i-EED, roughly, @Calliopespa. (Which I think is a bit mouthfully for an English speaker...?)

Yes, I like the Adelheid too, but Adelaide is the French version, and I'm not sure of your pronunciation ( it was my French Great Aunt's name) but it can be hard to tell with "MN phonics" (which mine were too!)

IgnoreIt · 14/05/2026 13:16

Horselover90 · 14/05/2026 12:39

Sounds very American

It's German in origin. Variant form of Adelheid (which was Heidi's real name in the Johanna Spyri novel -- nasty Fraulein Rottenmeier always calls her that).

The French version is Adéläide, pronounced more 'A-dell-i-EED, roughly, @Calliopespa. (Which I think is a bit mouthfully for an English speaker...?)

MiaKulper · 14/05/2026 13:14

Addy. I'm not keen but it's not awful.