auxiliatory
/ɔːˌsɪlɪˈɛtɔri/ or /ɒksɪlɪˈɛtɔri/Definitions
1. adjective
providing or giving assistance or support; auxiliary.
“The auxiliatory services provided by the volunteers greatly helped the affected community during the disaster.”
2. adverb
in a way that provides assistance or support; in an auxiliary manner.
“The team worked auxiliarily with the experts to complete the challenging project.”