Across
See 4 Down
Rock partner's body (5)
I haven't cracked this one yet — but Fifteensquared have:
Tor(=rock, as in a rocky hill) + SO, which is an abbrev for Significant Other.
Setter caught on to representation (4)
19a
(and 19 Across) Former wrestler now enjoys hand jiving (6,7)
Trick signal from Robin? (8)
I haven't cracked this one yet — but Fifteensquared have:
DD/CD. I'm not really up with cars but I assume this is something you might do with the hood of a Robin Reliant.
Pour very shakily for dealer (8)
A burden is over (6)
South of Madrid, capital of Brazil - bizarre! (7)
I haven't cracked this one yet — but Fifteensquared have:
Sur (Spanish for South) + real, the Brazilian currency
See 11 Across
Where you might be exposed to French letter on the radio? (6)
I haven't cracked this one yet — but Fifteensquared have:
CD/DD. Quebec is the phonetic alphabet representation for Q, so might be used on the radio.
Way to put down or flatter animal, maybe (8)
Where to find novel rock? (8)
I haven't cracked this one yet — but Fifteensquared have:
CD -Ref to Brighton Rock by Graeme Green
Rock flower (6)
I haven't cracked this one yet — but Fifteensquared have:
DD – flower in the sense of something that flows i.e. a river, the Hudson River + Rock Hudson, US actor. I must admit that I'd so forgotten about Rock Hudson that I actually typed rock hudson into Google to see if there was any connection between the two words. I was speculating that there might be a Hudson Rock or perhaps that Sherlock Holmes occasionally referred to Mrs Hudson as his "rock".
You and I exist incompletely and deteriorate (4)
I haven't cracked this one yet — but Fifteensquared have:
We ar[e]
Revise holy book, deleting additional words (5)
I haven't cracked this one yet — but Fifteensquared have:
[PS]alter
Greetings around the world performed with this? (2-2)
I haven't cracked this one yet — but Fifteensquared have:
Not sure if this is meant to be a sort of CD/DD or &lit. I assume the greeting is as in "Yo, buddy", which I imagine is fairly international. I don't think "this" on its own is enough to identify yo-yo but not sure either if a yo-yo is something you'd use for greetings, so maybe the &lit doesn't quite work.
Down
'Kept by tame owners', as pet would say? (4)
Set ovary in motion - be my guest! (4,4)
Hard stone over English cathedral city ... (6)
8a
(and 8 Across) ... has turrets and a rocky peak (7,4)
Rocky state of a party led by Brown, for example, in America (8)
I haven't cracked this one yet — but Fifteensquared have:
A do with color in front (US spelling of colour). Colorado is called a Rocky state because of its location in the Rocky Mountains.
Witness struggle over nude twerp (6)
Origins of hard outgrowth ruminant needs? (4)
I haven't cracked this one yet — but Fifteensquared have:
&lit – initial letters of " h ard o utgrowth r uminant n eeds".
Adieu loyal sudoku solver: you ultimately rock (5)
Ruin treat (5)
I haven't cracked this one yet — but Fifteensquared have:
DD, the second in the sense of spoiling children.
Rock is a 50-carat amalgam, middle-sized (8)
I haven't cracked this one yet — but Fifteensquared have:
(A L(=50 in Roman numbers) carat)* + [si]z[ed]. Alcatraz was nicknamed the Rock, a name used in a 1996 film with Sean Connery.
Desperately need a key to perception without enhancement (5,3)
Rock climbing in secret in Argentina (7)
Star of toilet graffiti? (6)
I haven't cracked this one yet — but Fifteensquared have:
Bog art = possible def of toilet graffiti
Stick poster in this place (6)
Rocky area on eastern tip of Finland (4)
Stone-working axes (4)
I haven't cracked this one yet — but Fifteensquared have:
On(=working) + YX(axes on a graph)
Type letters or click words in the clue