Open and Open up

Open verb - Cause to open or to become open.

Open up is a synonym for open in unblock topic. In some cases you can use "Open up" instead a verb "Open".

Nearby Words: opening, openness, opened, opener

Open up verb - Cause to open or to become open.

Open is a synonym for open up in present topic. You can use "Open" instead a verb "Open up", if it concerns topics such as reveal, begin, unroll, unblock.