"Dr Charlesworth added that lack of trust about SUDS has also been exasperated by poorly fitted systems..." - NFU Countryside magazine, March 2008.
I don't know if it was the Doctor or the journalist who failed to get it right, but he or she meant exacerbated. Just because the spell checker didn't complain doesn't mean it's the right word! There is no substitute for proper proof-reading or for understanding of difficult words.
Exasperate means to annoy exceedingly; exacerbate means to make worse.
LissaT
Pro 
Have I already sent you this?
Owed to the Spell Checker!
Eye halve a spelling chequer
It came with my pea sea
It plainly marques four my revue
Miss steaks eye kin knot sea.
Eye strike a key and type a word
And weight four it two say
Weather eye am wrong oar write
It shows me strait a weigh.
As soon as a mist ache is maid
It nose bee fore two long
And eye can put the error rite
Its rare lea ever wrong.
Eye have run this poem threw it
I am shore your pleased two no
Its letter perfect awl the weigh
My chequer tolled me sew.