distressing vs lamentable

distressing and lamentable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
distressing	No	Yes	No	No
lamentable	No	Yes	No	No

As adjectives, distressing and lamentable are synonyms defined as:

Other synonyms of distressing include deplorable, pitiful, sad, sorry.

distressing (adjective)	lamentable (adjective)
bad; unfortunate	bad; unfortunate
causing distress or worry or anxiety