What is the synonyms of without any break?

Here are some synonyms for "without any break," depending on the specific context you're looking for:

For continuous action:

* Nonstop

* Uninterrupted

* Constant

* Continuously

* Incessantly

* Relentlessly

* Without pause

* Without respite

* Without letup

* Without a hitch

For a specific time period:

* Straight through

* All at once

* In one go

* Without stopping

* Solid

For a lack of interruptions:

* Seamlessly

* Smoothly

* Effortlessly

* Unhindered

For a strong intensity:

* Full-blown

* Unmitigated

* Undiluted

* Complete

The best synonym will depend on the specific meaning you want to convey.