Intricate, involved, entangled, complicated, complex.
A genealogical coefficient of a given genealogical tree; defined as the difference between the number of theoretical ancestors of a person and the number of his/her real ones in a given generation (the degree of pedigree collapse).
Having a great deal of fine detail or complexity.
To enmesh or entangle: to cause to intricate.
To become enmeshed or entangled.