Submitted by György Chityil ... on Fri, 01/19/2018 - 23:45 Hierarchy: PrefixDescription: {{context|non-productive}} Against; facing; a combining prefix found in verbs of Latin origin.Ngram: ob-Ngram Text: ob-Source: WiktionaryIssue: 0Wiktionary tag: non-productiveNgram Count: 1