Across
Put together our clothes, prepared to sign up (4,3,7)
I haven't cracked this one yet — but Fifteensquared have:
JOIN ("put together") + *(our clothes") [anag; prepared ]
Finally securing a little energy: that's something (2,5)
I haven't cracked this one yet — but Fifteensquared have:
AT LAST ("finally") securing [ a little ] E (nergy)
See increases in slow slender creatures (7)
Alcohol? A tiny taste, about two months back (5)
I haven't cracked this one yet — but Fifteensquared have:
<=SIP ("a tiny taste", back) about M + M (two months)
Gives mail out, based on a score (9)
Waiting for security pass, as Stalin's nephew might have said? (9)
I haven't cracked this one yet — but Fifteensquared have:
"Stalin's nephew might have said" his UNCLE was A RED
Prime ministers given a flatbread (5)
I haven't cracked this one yet — but Fifteensquared have:
PITT (the name of two "Prime Ministers") given A
A great deal expected soon in this (5)
I haven't cracked this one yet — but Fifteensquared have:
If you're waiting for something and it is now in SIGHT , it is "expected soon"
Result of overindulgence perhaps troubling, Pepys said (9)
Simple song: could it be any louder? (9)
Competitive place a long time back (5)
I haven't cracked this one yet — but Fifteensquared have:
<=AN ERA ("a long time", back )
Artistic style of boxer's, with rapid movement around (7)
I haven't cracked this one yet — but Fifteensquared have:
(Muhammad) ALI'S ("of boxer") with REM (rapid (eye) movement) around
Whisper, about to go in to get clean (7)
A peculiar match abandoned with reference to drugs (14)
Down
Compiler in trousers: are you about to become intellectual? (4-4,6)
I haven't cracked this one yet — but Fifteensquared have:
PAUL (Guardian "compiler") in JEANS ("trousers") + ART ("are") + RE ("about")
Sort of faith I will take lots of tricks, diamonds mostly (7)
Short-lived rain's poured in many a time (9)
I haven't cracked this one yet — but Fifteensquared have:
*(rains) [anag: poured ] in TEN ("many") + T (time)
Old legal right in French is superior (7)
Bound to make line break important in dictionary (7)
I haven't cracked this one yet — but Fifteensquared have:
L (line) breaking BIG ("important") in OED (Oxford English "Dictionary")
Master reacts offensively principally falling over rootstock (5)
I haven't cracked this one yet — but Fifteensquared have:
<=(SIR ("master") + R (eacts) O (ffensively) [ principally ] ) [ falling over ]
Stalks over the floor in a hurry, cutting friend short (4,3)
Callas's able somehow to retain musical sense with purest tone (2,5,2,1,4)
I haven't cracked this one yet — but Fifteensquared have:
*(callas's able) [anag: somehow ] to retain EAR ("musical sense")
Stop admitting a latitude that's commonly accepted (9)
I haven't cracked this one yet — but Fifteensquared have:
PREVENT ("stop") admitting A + L (latitude)
One morbidly interested in death, say, remains in a stew (7)
Tricky position, lying on front between two women (7)
Always in black, which is OK for a speaker (7)
One doesn't believe it's cold through the month, almost freezing! (7)
I haven't cracked this one yet — but Fifteensquared have:
C (cold) through Sept. (September, so "month") + [ almost ] IC (y) ("freezing")
Cyclist has her day in the lead, weather having improved (5)
I haven't cracked this one yet — but Fifteensquared have:
RIDER ("cyclist") with D (day) in the lead becomes D(RIER)
Type letters or click words in the clue