disturbingly

dis·turb  (d-stûrb)

tr.v. dis·turbed, dis·turb·ing, dis·turbs

1. To break up or destroy the tranquillity or settled state of: "Subterranean fires and deep unrest disturb the whole area" Rachel Carson.

2. To trouble emotionally or mentally; upset.

3.

a. To interfere with; interrupt: noise that disturbed my sleep.

b. To intrude on; inconvenience: Constant calls disturbed her work.

4. To put out of order; disarrange.

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[Middle English distourben, from Old French destourber, from Latin disturbre : Latin dis-, dis- + Latin turbre, to agitate (from turba, confusion, probably from Greek turb).]

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dis·turber n.

dis·turbing·ly adv.

Thesaurus

Adv.

1.

disturbingly - in a disturbing manner; "the details of the kidnaper's letter had sounded disturbingly convincing"