Across
Singer to comprehend soprano needs no piano (5)
Defy small buzzing insect (9)
Not looking for anybody not entirely at this time of day (9)
Offers to catch right creatures (5)
American pursuing scandalous rumours without much substance (8)
Shop not opening beset by stench? Gas (6)
Broken leg hit with beam getting split? (10)
Chess player with no large sponsor (4)
I haven't cracked this one yet — but Fifteensquared have:
B [l] ACK (one of the two players in a chess match), without L (abbreviation for large).
Big cat turned up in the morning after making retreat (4)
I haven't cracked this one yet — but Fifteensquared have:
UP reversed (turned), then AM (am = abbreviation for Latin ante meridiem = before noon = in the morning) reversed (after making retreat).
Honest lecturer mostly absent - substantial racket moving in? (10)
I haven't cracked this one yet — but Fifteensquared have:
L (abbreviation fror lecturer) + AWA [y] (absent) without the last letter (mostly), then BIG (substantial) with DIN (racket = loud unpleasant noise) moving into it.
Empty odes? Wrong to include a legendary Irish poet (6)
I haven't cracked this one yet — but Fifteensquared have:
O [de] S (empty = inner letters removed) + SIN (wrong, as a noun = a bad deed), including A . Supposed author of a cycle of poems published by the 18th-century Scottish poet James Macpherson; it’s been suggested that Macpherson wrote much of it himself, based on earlier traditional poems.
Women’s golf tournament in Barking etc. getting minimal funding? (8)
Article probing one top poem (5)
Erratic? Most Irish will be erratic (9)
Vegetarian but not vegan going around British helicopter (9)
I haven't cracked this one yet — but Fifteensquared have:
EGG EATER (vegetarians will usually eat eggs, but vegans won’t) around B (abbreviation for British). Slang for a helicopter, referring to its spinning rotors; presumably coined as a derogatory term by pilots of fixed-wing aircraft.
Supports enclosing river bays? (5)
Down
City in the part of Germany initially bathed in light (7)
I haven't cracked this one yet — but Fifteensquared have:
AS (in the part of = playing a role on stage or film, as in “David Tennant as Hamlet”) + initial letter of G [ermany], contained in GLOW (bathed in light).
Contents of gallery shock - religious figure departing (3)
I haven't cracked this one yet — but Fifteensquared have:
[st] ART (a shock, as in “it gave me quite a start”), without ST (abbreviation for saint = religious figure).
Uncovered person about to engage in bet and run? (8)
I haven't cracked this one yet — but Fifteensquared have:
RE (about = on the subject of), inserted into STAKE (money placed as a bet) + R (abbreviation for run, in cricket scoring). Extended definition: someone who runs naked across a sports field or other public place, often as a result of a bet.
What could be arranged by twelve? Broadcast media could (10)
Extracted coal perhaps extracting energy generating attention (4)
I haven't cracked this one yet — but Fifteensquared have:
MIN [e] D (extracted natural resources, perhaps coal, from underground), without the E (abbreviation for energy). As in “pay no mind to . . .” or “if you put your mind to it”.
Revolutionary Internet concept involving British Library symbol (6)
I haven't cracked this one yet — but Fifteensquared have:
MEME (an image, video or phrase that becomes widely used on the Internet) reversed (revolutionary), containing BL (abbreviation for the British Library in London, website bl.uk ).
In favour of state retaining one constant feature of church architecture? (11)
I haven't cracked this one yet — but Fifteensquared have:
FOR (in favour of) + NATION (state), containing I (one in Roman numerals) + C (abbreviation for a mathematical constant). It means arched structures, such as those holding up the roof of a traditional church building. Any other interpretation is your own business. (But the derivation seems to be from the Latin fornix for a vault with an arched roof, which then suggests an underground hideaway where you can meet someone in secret.)
Muslim dress remains a source of mystery in conversation (7)
I haven't cracked this one yet — but Fifteensquared have:
ASH (remains from something burned) + first letter (source) of M [ystery], in YAK (slang for conversation, especially annoying or trivial chatter). A Muslim veil that covers the face below the eyes.
Small monarch involving one military group with his scrappy scrappy fighting (11)
I haven't cracked this one yet — but Fifteensquared have:
S (abbreviation for small) + KING (monarch), containing I (one in Roman numerals) + RM (abbreviation for Royal Marines = military group) + anagram (scrappy) of HIS .
That woman arrived clutching a wet struggling seabird (10)
I haven't cracked this one yet — but Fifteensquared have:
SHE (that woman) + ARR (abbreviation for arrived, in railway and flight timetables), containing an anagram (struggling) of A WET . A bird in the petrel family, named for its habit of flying very low over sea waves.
Discourage detective with exact image about one murderer’s latest (8)
I haven't cracked this one yet — but Fifteensquared have:
DI (abbreviation for Detective Inspector) + SPIT (short for “spitting image” = an exact match), around I (one in Roman numerals) + last letter (latest) of [murdere] R .
Offer expert a bit of difficulty in contest (7)
I haven't cracked this one yet — but Fifteensquared have:
PRO (short for professional = expert), then the first letter (a bit) of D [ifficulty] inserted into VIE (contest, as a verb = compete).
Supposes visitors to lose time touring South-East (7)
I haven't cracked this one yet — but Fifteensquared have:
GUES [t] S (visitors) without T (abbreviation for time), around SE (abbreviation for south-east). Guess = suppose = to assume without proof.
Lightly jiggle odd bits of dull earth (6)
I haven't cracked this one yet — but Fifteensquared have:
D AND L (the odd-numbered letters of D[u]L[l]), then E (abbreviation for earth, in electrical wiring). To bounce [a young child] gently on your lap or in your arms.
Discuss beginning with ceramic tile (4)
Bad behaviour sees dropping of first reserve (3)
I haven't cracked this one yet — but Fifteensquared have:
I think this is [v] ICE (bad behaviour) dropping the first letter. Ice, as a verb = “put on ice” = reserve for later. UPDATE: KVa @1 suggests ice, as a noun = reserve = a person’s unfriendly character, which I think is a better explanation.
Type letters or click words in the clue