1) Adamant 2) Continual 3) Exigent 4) Forceful 5) Imperative 6) Inexorable 7) Persistent 8) Repetitive 9) Stubborn 1) Assertive 2) Beseeching 3) Continual 4) Demanding 5) Demanding attention 6) Earnest 7) Hard to brush off 8) Hard to deny 9) Importunate 10) Not giving up on an argument 11) Not taking no for an answer 12) Persistent 13) Persistently continual 14) Persuasive 15) Pertinacious 16) Pleading 17) Repetitive 
• (a.) Standing or resting on something; as, an insistent wall. • (a.) See Incumbent. • (a.) Insisting; persistent; persevering.
In·sist'ent adjective [ Latin insistens , -entis , present participle of insistere .] 1. Standing or resting on something; as, an insistent wall. Sir H. Wotton. 2. Insisting; persistent; persevering. 3. (Zoology) See Incumbent
[adj] - persistently continual
repetitive adjective persistently continual; `the bluejay`s insistent cry`
earnest or emphatic in dwelling upon, maintaining, or demanding something; persistent; pertinacious. · compelling attention or notice: an insistent tone.