Hidden Set
by Kegler

Some clues lack a definition, and hence are wordplay only; these answers disguise a common set.

Hidden Set grid

Across
1Mom cuts in, unfortunately (9)
9Old Chevy model overturned in river (4)
11One using force to swindle that lady holding one face card (8)
13Drivers from Missouri suffering endlessly (8)
14Couples from Australia took vehicle (4)
15United Nations city ignoring onset of conflict for togetherness (5)
16Ms. Parks seen in box seats behind church area (5,2,5)
17Gave up having a tournament ranking, we hear (5)
18Element of kiss nobody recalled (5)
19Audibly feel sorry for myself, having lots of space (5)
22Particular bridges of U.S.S. Yorktown (5)
24Did camp’s ice hold out? (12)
27Keep storing old wine (5)
28Daughter ran back with ointment (4)
29Flirtatious lady following Mr. Cleaver inside (8)
31Agent, after awkward lunge, is overwhelmed (8)
32Adult enters filming location to work as an usher (4)
33Document describes media (9)
Down
1Photography equipment arrived incomplete (3)
2Flip-flopping Tom and I have incentive (6)
3“Driving Miss Daisy” author and you with your family finally (4)
4Show approval, welcoming one Mr. Hunter (6)
5Dismiss any offers involving electronics firm (5)
6Shorebird and diving birds heading north (4)
7Becomes unhappy, per Reverend Spooner? C’mon! (4,2)
8Modern ape’s strange walk (9)
10Rocky not doomed (5,4)
12Some students interrupted by electrical engineer’s derisive comments (5)
14Those who appraise pack animals with sores having no energy (9)
15Unit I dropped fell down (9)
20Canoes foundering in seas (6)
21Make fun of fools returning with LP (5)
22Female left one short (6)
23That woman’s accepted commercial for sunglasses (6)
25Club showcases large twin crystal (5)
26Ship once carrying rare... (4)
27...sample of soft drink for Nigerian singer (4)
30Raised tax, eliminating unsatisfactory accountant’s acronym (3)

Solution