Unsubstantial is a related term of groveling.
As an adjective unsubstantial
is (archaic).
As a verb groveling is
(us).
As a noun groveling is
the act of one who grovels.
groveling
English
Alternative forms
* (UK) grovelling
Verb
(head)
(US)
*
Noun
(
en noun)
The act of one who grovels.