Dt 28891

[chalky2850]

1a Prevent son getting killed (7)
16d Loving French friend holding diamonds-a symbol of affection(8)
14a Newspaper,say,I sat on after one's tidying (12)

[Jackdaw33]

If it's prevented then it would be Stopped.

[Mamyalynne]

14 Organisation

Organ + I sat on + i (one)

[Lie-in King]

16d Admiring - 'd(iamonds)' (in) 'ami' + 'ring'

[vetuste_ennemi]

I'd like 1A to be s+topped.
a(D)mi+ring

[chalky2850]

Yes. Thank you

[Flonska]

1a. The clue does read "prevented." Stopped is the correct answer.