What is the synonym of ponderous?

There are many synonyms for "ponderous," depending on the specific context. Here are some options, categorized by meaning:

Heavy or weighty:

* Massive

* Bulky

* Clumsy

* Heavy

* Cumbersome

* Enormous

* Colossal

* Immense

Slow or laborious:

* Slow

* Tedious

* Dull

* Monotonous

* Tiresome

* Prolix

* Lengthy

* Wordy

Serious or solemn:

* Grave

* Solemn

* Serious

* Earnest

* Thoughtful

* Reflective

Other synonyms:

* Onerous (burdensome)

* Profound (deep and thoughtful)

* Unwieldy (difficult to handle)

* Stupendous (amazingly large)

* Oppressive (weighing heavily)

The best synonym for "ponderous" will depend on the specific context and the nuance you are trying to convey.