Any process that stops, prevents or reduces the frequency, rate or extent of synaptic vesicle endocytosis.
Synonyms:
exact_synonym:
down regulation of synaptic vesicle endocytosis; downregulation of synaptic vesicle endocytosis
narrow_synonym:
inhibition of synaptic vesicle endocytosis
related_synonym:
down regulation of synaptic vesicle retrieval; downregulation of synaptic vesicle retrieval; inhibition of synaptic vesicle retrieval; negative regulation of synaptic vesicle retrieval