Across
8
Like strand in character flaw, we hear (8)
9
Erred badly penning article, so looked through again (6)
10
Call for peace by American that’s false (4)
11
How data can be misused in unusual way (10)
12
Spoil Monday’s leader in Guardian, say (6)
14
List site incorrectly for highly selective types (8)
15
Team retaining nonsense? Just the opposite – they emend as necessary (7)
17
Paul, Pasquale et al. soon succeeded after Brendan’s misdirected (7)
20
In which it’s possible to score with pizzazz? No way! (8)
22
Wrongly interfere with doctor in case (6)
23
Supporting old fashions, including about checks for errors (10)
24
Result of key choice being botched in party politics (4)
25
Mark improperly using wide variety of grades (6)
26
How one makes gaffes, reversing words lazily (8)
Down
1
In the course of inserting clip, got sound wrong (8)
2
Half of our letters now known to be etymologically incorrect (4)
3
Boob putting in answer, oddly – this might help (6)
4
Line in book below is solecism (7)
5
Female badly ruined a kind of slip that’s revealing (8)
6
One part of basic education helping a learner lacking in logic (10)
7
Prince who knew funny man (not well) in village (6)
13
Misrepresented graph, say, to mathematician (10)
16
In grass, finding seed case, I corrected grave mistake? (8)
18
Go astray delivering letters (8)
19
Word of explanation as dandies err, initially, about cape (7)
21
Move erratically at speed, possibly making ace err (6)
22
Fail to hear spoken signal on stage in badly directed play (6)
24
Set off for journey that could also be mistake (4)