Clue: Can't stand having abandoned defensive measures (7)
Answer: DETESTS
Explanation: Definition: Can't stand
I do not follow the wordplay. Is a TEST a 'defensive measure'? Is the prefix DE- intended to be attached to a verb or a noun? The nearest I can get is treating TESTS as noun, which at least agrees with 'abandoned defensive measures', with 'having' as a link, but it seems a stretch too far to me. Any ideas?