/ dɪˈstɜːb; NAmE -ˈstɜːrb/ verb
1.
[ vn ] to interrupt sb when they are trying to work, sleep, etc. :
I'm sorry to disturb you, but can I talk to you for a moment?
If you get up early, try not to disturb everyone else.
Do not disturb (= a sign placed on the outside of the door of a hotel room, office, etc.)
She awoke early after a disturbed night.
2.
[ vn ] to move sth or change its position :
Don't disturb the papers on my desk.
3.
to make sb worry :
[ vn ]
The letter shocked and disturbed me.
[ vn to inf ]
It disturbed her to realize that she was alone.
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WORD ORIGIN
Middle English : from Old French destourber , from Latin disturbare , from dis- utterly + turbare disturb (from turba tumult).