Do you have a favourite word ?

Schadenfreude. Love the sound.
Discombobulate. Amuses me.
Authenticate. Much better than boring old "verify".
Experiential.
Existential.
Exponential.

I like techy words too, such as "ping" used as a verb.

Also:

Cut/paste.
Embolden.
Undo/redo/refresh.

Cherrytree59 and SirChenjin

His/Her coat is on a schoogly peg is my very favourite saying

My favourite word is also scunnered, it is a great word to use if you are really fed up!

Quintessential! Love this word!

Thank you (2 words, I know) but it’s a phrase which is useful in many pleasant situations, when someone has done something nice for you.
For example - the first cup of coffee of the day in bed; an unexpected kindness, a surprise, a lift in the car, a nice lunch out, positive feedback etc etc.

Find

I love saying 'exacerbate'.

I also like 'obfuscate' and 'polemical'.

I do use them whenever I have the opportunity. but husband has got used to them now so I will have to fin new ones

Shoogle is a great word as well! I think we have some fantastic and expressive words and phrases up here.

Schoogle love it.
If I want to make something work, I just give it a quick shoogle.

When putting a fresh duvet cover, I find helps if I give the quilt a wee shoogle.

SirChenjin my Grandpa's favourite word was scunnered.

My other favourite word is Congratulations?
I think it is a lovely word.
It seems to flow off the pen.

Wimple. (I don't know why; perhaps it's just the sound of it. I don't use it very often!)

I have, but better not say it!

I rather like the word plumptious.
Also,
Velvet
Evergreen
Vitality
Purple
Parsimonious
( p’s and v’s seem to feature heavily)?

Flabbergasted. Much, much better than gobsmacked!

Culvert. Coriander, Chicane.

Recoco I loved it the first time I heard it, sadly it doesn't lend itself to every day conversation because I find the late Baroque (another good one) doesn't come up very often

SirChenjin Ethereal is my favourite word , has been for years. It’s such a lovely floaty word.

I no longer live in Scotland but was an in-comer there for years and heard many words and expressions that were new to me. One of my favourites is feeling wabbit - feeling tired-out, exhausted.

Some of mine already mentioned.

I like ‘melodious’ (but not ‘malodorous’, if that’s a word).

I read somewhere that we tend to like words that contain an m, l or r. Sometimes we like the sound, sometimes the meaning.

I've rather liked 'psychedelic' ever since the 1960s. It makes me think of vibrant colours and the Apple boutique.

Splendid, I use it a lot!

Mellifluous - always makes me feel harmonious

Susurration for me, but hardly ever use it.
It just sounds so lovely.

Exponential. I just love it!!

There is a very special restaurant/bar called "Serendipity" on Las Vegas Blwd and very nice it is to.

Yes

I also love “serendipity”, also “incandescent”. Have yet to find an appropriate sentence to slip them into!