maintain vs asseverate

maintain and asseverate both are verbs.

Word	Noun	Adjective	Verb	Adverb
maintain	No	No	Yes	No
asseverate	No	No	Yes	No

As verbs, maintain and asseverate are synonyms defined as:

Other synonyms of maintain include assert.

maintain (verb)	asseverate (verb)
stick to correctly or closely	state categorically
state categorically
state or assert
support against an opponent
maintain by writing regular records
supply with necessities and support
keep in safety and protect from harm, decay, loss, or destruction
have and exercise
maintain for use and service
cause to continue in a certain state, position, or activity