There are many synonyms for the word "uncommendable" which is used to describe something that is not deserving of praise or recommendation. Other words that carry a similar meaning include "blameworthy," "discreditable," "shameful," "condemnable," "disgraceful," "reprehensible," "objectionable," "unacceptable," and "untoward." These words can be used interchangeably in a sentence to convey the same message of disapproval or negativity towards something. It is important to note that using synonyms can enrich your writing and help you convey your message more effectively by using a variety of vocabulary.