Unstopped

verb (used with object), unstopped, unstopping.
1.
to remove the stopper from:
to unstop a bottle.
2.
to free from any obstruction; open:
to unstop a sewer.
3.
to draw out the stops of (an organ).
adjective
1.
not obstructed or stopped up
2.
(phonetics) denoting a speech sound for whose articulation the closure is not complete, as in the pronunciation of a vowel, fricative, or continuant
3.
(prosody) (of verse) having the sense of the line carried over into the next
4.
(of an organ pipe or a string on a musical instrument) not stopped
verb (transitive) -stops, -stopping, -stopped
1.
to remove the stop or stopper from
2.
to free from any stoppage or obstruction; open
3.
to draw out the stops on (an organ)