As adjectives the difference between jinglier and jigglier
is that jinglier is (jingly) while jigglier is (jiggly).
jinglier
English
Adjective
(head)
(jingly)
jingly
English
Adjective
(er)
that jingles, having a jingling sound.
jigglier
English
Adjective
(head)
(jiggly)
jiggly
English
Adjective
(er)
that jiggles