adservio
adservio, to help, assist, strengthen
Could not find adserviunt in Logeion dictionaries.
adserviunt Verb: present active indicative 3rd plural of adservio
adservĭō ( ass- ), īre, intr., sʼasservir à, sʼassujettir à [avec dat.] : Cic. Tusc. 2, 56.