insurmountable

/ˌɪnsərˈmaʊntəbəl/
adjective
  1. Too great or difficult to be overcome or dealt with.
    • For many students, the cost of college can seem like an insurmountable barrier.
    • Despite the insurmountable odds, the small army refused to surrender.
    • The team faced insurmountable obstacles during their climb up the mountain.
Antonyms
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