THESAURUS
approaching, asymptotic, brushing, centripetal, centrolineal, concurrent, confluent, confocal, connivent, contacting, contingent, converging, digressive, divergent, extraneous, focal, glancing, grazing, impingent, impinging, in contact, irrelevant, meeting, mutually approaching, nudging, osculatory, peripheral, radial, radiating, rubbing, tangent, touching, uniting, unrelated
ROGET THESAURUS
Contiguity
N
contiguity, contact, proximity, apposition, abuttal, juxtaposition, abutment, osculation, meeting, appulse, rencontre, rencounter, syzygy, coincidence, coexistence, adhesion, touching, (touch), borderland, frontier, tangent, abutter, contiguous, touching, in contact, conterminous, end to end, osculatory, pertingent,
tangential, hand to hand, close to, with no interval.