Across
Complicated kind of relationship the Oval Office finally sorted out (4-4)
I haven't cracked this one yet — but Fifteensquared have:
An anagram (sorted out) of THE OVAL [offic]E
Nothing in striking description that's solid? (3-3)
I haven't cracked this one yet — but Fifteensquared have:
The opposite of ‘nothing in’ – and, in the description of a strike, ‘all-out’ could be defined as ‘solid’ (Chambers: ‘unanimous’ Edit: all-out is, of course, the same as nothing in – thanks, Lord Jim @6
Fly, perhaps, one swallowed by nocturnal insectivore (4)
10 in river shortened with stick (10)
Show or conceal (6)
Removing or securing piece of paper (8)
My son, crazy about Big Apple either way? It means the same (7)
This, of itself, is 15 (7)
I haven't cracked this one yet — but Fifteensquared have:
The opposite of ANTONYM (itself) is SYNONYM (15ac)
The end of some extinct creatures shown in useful reference books (8)
Provided with food taken back to consume — best or worst (6)
Prone to be standing up to with determination (6,4)
Common complaint about antique (4)
Slander American woman, European female intervening (6)
I haven't cracked this one yet — but Fifteensquared have:
E (European) + F (female) in DAME (American woman)
One that's not part of 1, not so unusual (8)
Down
Month and year in which to take on one kind of state (8)
I haven't cracked this one yet — but Fifteensquared have:
MARCH (month) + Y (year) round ON
Intensity of feeling produced by race (4)
Guinea inferior to former French colony? That's slander (6)
Something needed before formulating sentence, found in whatever dictionary (7)
Permit, or punitively deter, second name appearing in deed (8)
I haven't cracked this one yet — but Fifteensquared have:
S (second) + N (name) in ACTION (deed) – another classic example of an autantonym,
Following explosion initially in light on ceiling, not flammable or inflammable (10)
I haven't cracked this one yet — but Fifteensquared have:
F (following) + E[xplosion] in LAMP (light) + ROOF (ceiling); flammable and inflammable mean virtually the same but Collins notes under ‘flammable’: ‘USAGE flammable and inflammable are interchangeable when used of the properties of materials. Flammable is, however, preferred for warning labels as there is less likelihood of misunderstanding (inflammable being sometimes taken to mean not flammable. Inflammable is preferred in figurative contexts: this could prove to be an inflammable situation ‘
Get excited, start attack (4,2)
Self-absorbed — extra time in first half would make very little difference (10)
I haven't cracked this one yet — but Fifteensquared have:
Another t (extra time) in the first half of the word would give ego t istical, which means much the same
Between the two of us, locate no good new striplings (5,3)
Regular but infrequent publications from unknown, first abridged (8)
One of 16, more or less, in island (7)
Rise and fall before noon? Hell, no (6)
I haven't cracked this one yet — but Fifteensquared have:
HEAVE (rise and fall) before N (noon)
Person who's active in so many directions? Just the opposite (6)
Fashionable, but not hot (4)
Type letters or click words in the clue