Skeleton

[smiley1]

11a CSE described to a class for real, could this be sincere
2d Endlessly gelud surgery acquiring a gas fire, ING--, could this be single
19a Circular cage abandoned by a good many animals. O-ELO-S

MANY thanks

[Mamyalynne]

19 Ocelots

O C(ag)e + Lots

[Captain2]

smiley, does 2d actually say 'gelud', please?

[herbage]

Number of letters always helps please

[Mamyalynne]

Skeleton doesn't have counts sadly.

[smiley1]

No it says gelud

The no of letters for 11a is 7

[Captain2]

herbage, it is a skeleton crossword so the OP may not have enough of the grid completed to give answer lengths.
However we do have 11 ans 19 word lengths

[Captain2]

smiley, does 2d actually say 'gelud', please?

'No it says gelud'

Puzzled of Wimslow

[smiley1]

It's my spell check that is at fault I said gel.d with an I but it keeps changing to a u. 5 letters and I said ingle keeps changing to single

[herbage]

Thanks Mamyalynne and captain 2

[Davemano]

2d Is as OP posts apart from it being GELID. It is 5 letters and the answer is Ingle.

[smiley1]

So is sincere also correct

[Mamyalynne]

ah - N (Nein) in anag. (surgery) of Geli(d)

[Mamyalynne]

Neon

[Mamyalynne]

11 In 'CSE' S (is) in C - but I can't make 'ere' sound like 'E'

[smiley1]

Thanks all, I will go with sincere as it's the only thing that fits

[herbage]

Ingle
Could it be geli(d) acquiring N ( nitrogen )
The abbreviation for Neon is Ne

Sorry to disagree with you Mamy

[Mamyalynne]

N - Nitrogen, agreed.

[Davemano]

The gas (N) is Nitrogen but it doesn't affect the answer.

[herbage]

True but we like to be accurate and it was not a criticism but a comment that mammy would appreciate as an extremely good solver

[Davemano]

^^^ I accept your point, and I like to be accurate, but was just making a comment. A pity some of the clues lack accuracy.