What is one literary element of the poem "Not waving but drowning"?

PLS HELP IMEDIATELY!!!
I only need one literary element because I can not find one.

8 answers

Not Waving but Drowning
BY STEVIE SMITH
Nobody heard him, the dead man,
But still he lay moaning:
I was much further out than you thought
And not waving but drowning.

Which

Poor chap, he always loved larking
And now he’s dead
It must have been too cold for him his heart gave way,
They said.

Oh, no no no, it was too cold always
(Still the dead one lay moaning)
I was much too far out all my life
And not waving but drowning.

Which literary elements have you studied?
Rhyme scheme
alliteration
repetition
imagery
personification
hyperbole
allusions
onomatopoeia
simile
metaphor
irony
oxymoron
symbolis.
I already have one literary element, repetition, but the other one I actually can not find.
The startling thing about this poem is the opposites in there, primarily that a dead person can talk or moan or anything else.

Which of those elements deals with opposites?
I see rhyme scheme, repetition, imagery, allusion, metaphor . . .
So an oxymoron deals with opposites, but where does it say there are opposites in the poem
Do dead people talk?
http://examples.yourdictionary.com/examples-of-oxymorons.html

http://typesofirony.com/the-3-types-of-irony/

I hope you can understand the differences -- AND the different types of irony! Read, read, read, and let us know what you decide.