1. To free from a stopple or from any obstruction; to open.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• intop,
• untop,
• unstood,
• unsurp,
• unstil,
• insto,
• nostop,
• gunstok,
• nstoc,
• unstape,
• unstoped,
• unstap,
• unstore,
• unhop,
• Unsoot,
• unstak,
• unstepp,
• unstip,
• unsto-,
• unstopp

• uncut,
• unction,
• unstated,
• unstopped,
• unctuous,
• unhostile,
• unstaple,
• unstrap,
• unused to,
• unused.

The adjective form of the word "unstop" is "unstoppable".

The plural form of the word "unstop" is "unstops"

The singular form of the word "Unstop" is "Unstopped"