Across
Thickener helping you finally blot a pen (9)
I haven't cracked this one yet — but Fifteensquared have:
Final letters of [helpin] G [yo] U , then MAR (blot, as a verb = spoil) + A + BIC (brand name of ballpoint pens). A tree gum used as a thickener in foods and cosmetics.
Laugh professor being tricked (5)
Athlete Jay subs for Henry in team sport (6)
I haven't cracked this one yet — but Fifteensquared have:
[h] OCKEY (team sport), with J (jay = a way of writing the sound of the letter J) instead of H (abbreviation for Henry, a unit of electrical inductance).
Family returned post shilling for charity (8)
Some flaws in translation besetting over five Bible books (10)
I haven't cracked this one yet — but Fifteensquared have:
Anagram (in translation) of SOME FLAWS , containing (besetting ) O (abbreviation for over, in cricket scoring). Term used for the first five books of the Bible.
Orderly thanks nurse upon retirement (4)
Work uniform temporarily provided with deep pockets (7)
Objection from beginners ignored by explosive expert (7)
Betrayed spouse principally with ex (4)
I haven't cracked this one yet — but Fifteensquared have:
First letter (principally) of S [pouse] + OLD (ex). Slang for betrayed, especially in a case of someone sacrificing their principles for financial gain.
Cheat ultimately regrets hesitations means to stop lying (10)
I haven't cracked this one yet — but Fifteensquared have:
Last letter (ultimately) of [chea] T , then RUTHS (plural of ruth = regret or repentance), then ER + UM (two sounds expressing hesitation). A drug that purportedly forces the recipient to tell the truth; it’s a convenient idea, but such things have never been proven to work.
Chances to see contest to get theatre parts (8)
Very hard times written about by a North African (6)
I haven't cracked this one yet — but Fifteensquared have:
SO (very) + H (abbreviation for hard, as in 2H pencils) + X (multiplication symbol = times), all reversed (written about), then A + N (abbreviation for north). Adjective from Xhosa = a people group in southern Africa, or their language.
Provincial couple head for London (5)
Spanish dance to finish off a tea party (9)
I haven't cracked this one yet — but Fifteensquared have:
ZAP (to bring down or destroy = to finish off) + A TEA + DO (slang for a party). A style of Andalusian dance music, or a style of flamenco dancing involving rhythmic foot-tapping.
Down
Gold armour regularly put on a fairytale princess (6)
I haven't cracked this one yet — but Fifteensquared have:
AU (Au = chemical symbol for gold, from Latin aurum ) + alternate letters (regularly) of [a] R [m] O [u] R + A . Name of the title character in the Disney film Sleeping Beauty .
Financially supported Spooner's arrant daring (10)
I haven't cracked this one yet — but Fifteensquared have:
Spoonerism for RANK (arrant = very bad) + BOLD (daring).
Trailers for comic drama Groundhog Day giving little away (4)
Obnoxious detectives held up Sikh wrongly (7)
Nonlinear narrative holds merit (4)
Kid catches Labradors climbing for fun on table (8)
I haven't cracked this one yet — but Fifteensquared have:
FOOL (kid, as a verb = deceive), containing LABS (short for Labrador dogs) reversed (climbing = upwards in a down clue). Another name for table football, mainly in the US: I had to ask Wikipedia to confirm that.
Seeing China cycled over mostly dirt (8)
I haven't cracked this one yet — but Fifteensquared have:
CHINA with the first two letters “cycled” round to the end, containing SMU [t] (dirt) without the last letter (mostly). Seeing as = inasmuch as = because.
Second theatrical award includes concerning lack of diversity (8)
I haven't cracked this one yet — but Fifteensquared have:
MO (short for moment = second) + TONY (Broadway theatre award named after Antoinette Perry), including ON (on the subject of = concerning).
Ladies in denial squandered warning (10)
Conditions for mayday met by Victoria (8)
Slav from Ljubljana is survivor after uprising (7)
Country sounds of sheep and fowl (6)
I haven't cracked this one yet — but Fifteensquared have:
Sound-alikes for EWE (a female sheep) + GANDER (a male goose = fowl).
Audibly process dairy product (4)
I'm after whiskey shot that goes right through one (4)
Type letters or click words in the clue