1. Unite (beliefs or conflicting principles)
   "They syncretised elements from various religious traditions";
   - syncretize
    
2. Become fused
   "The different cultural traditions syncretised over time";
   - syncretize

Derived forms: syncretised, syncretising, syncretises

Type of: blend, coalesce, combine, commingle, fuse, immix [archaic], meld, merge, mix, unify, unite