complain about, complaint	express dissatisfaction or annoyance (verb+noun)
protest about, protest	strongly expressed complaint, disapproval or disagreement (verb+noun)
object to, objection	be against sth or sb (verb+noun)
remonstrate against, remonstrance	formal: complain to sb or about sth (verb+noun)
find fault with, fault-finding	criticise or complain about even small mistakes (verb+noun)
grumble about, grumble	complain in a quite but angry way (verb+noun)
gripe about, gripe	informal: to complain continuously (verb+noun)
grouse about, grouse	inf: to complain usually often (verb+noun)
whinge about, whinge/whingeing	inf: complain persistantly (verb+noun)
It's a bit chilly in here.	I wish you'd close the window. (in indirect way)
Your son would be well advised to work a bit harder.	Your son is very lazy. (in indirect way)
Your work would benefit from some proofreading.	Your work is extremely careless. (in indirect way)
Her appearance is not her highest priority.	She is scruffy. (in indirect way)
The children tend to be a bit noisy.	You can't hear yourself speak. (in indirect way)
take great exception	to have enough of