What is synonym for dull?

Here are some synonyms for "dull," depending on the context you're using it in:

For describing something boring or uninteresting:

* Tedious

* Monotonous

* Bland

* Uninspiring

* Uninteresting

* Tiresome

* Dreary

* Lackluster

* Vapid

* Flat

For describing something lacking sharpness or brightness:

* Blunt

* Dim

* Muddy

* Unpolished

* Matte

* Opaque

For describing something lacking in intellect or alertness:

* Stupid

* Slow

* Obtuse

* Unintelligent

* Unresponsive

For describing something lacking in excitement or activity:

* Quiet

* Peaceful

* Still

* Inactive

* Sluggish

Please provide more context if you need more specific synonyms!