superstructure

noun 0.640

superordinate

noun 0.606

top-level

noun 0.559

substratum

noun 0.554

supertype

noun 0.552

surface layer

noun 0.546

macrostructure

noun 0.540

superclass

noun 0.528

target language

noun 0.518

proto-language

noun 0.516

supergraph

noun 0.516

world language

noun 0.513

superset

noun 0.513

top tier

noun 0.509

supra

noun 0.508

sublanguage

noun 0.507