Princeton's WordNet

1. averageness, mediocrity(noun)

   ordinariness as a consequence of being average and not outstanding

2. second-rater, mediocrity(noun)

   a person of second-rate ability or value

   "a team of aging second-raters"; "shone among the mediocrities who surrounded him"

Wiktionary

1. mediocrity(Noun)

   The quality of being intermediate between two extremes; a mean.

2. mediocrity(Noun)

   A middle course of action; moderation, balance.

3. mediocrity(Noun)

   The condition of being mediocre; having only an average degree of quality, skills etc.; no better than standard.

4. mediocrity(Noun)

   An individual with mediocre abilities or achievements.

Origin: From mediocritas, from mediocris.

Webster Dictionary

1. Mediocrity(noun)

   the quality of being mediocre; a middle state or degree; a moderate degree or rate

2. Mediocrity(noun)

   moderation; temperance

• middelmatigheidAfrikaans
• وَسَطيَّهArabic
• посредственостBulgarian
• mediocridadePortuguese (BR)
• prostřednostCzech
• die MittelmäßigkeitGerman
• middelmådighedDanish
• μετριότηταGreek
• mediocridadSpanish
• keskpärasusEstonian
• متوسطFarsi
• keskinkertaisuusFinnish
• médiocritéFrench
• בֵּינוֹנִיוּתHebrew
• साधारण गुणवालाHindi
• osrednjostCroatian
• középszerűségHungarian
• tingkat sedangIndonesian
• meðalmennskaIcelandic
• mediocritàItalian
• 平凡Japanese
• 평범, 보통Korean
• vidutiniškumas, vidutinybėLithuanian
• viduvējībaLatvian
• tidak berapa baikMalay
• middelmatigheidDutch
• middelmådighetNorwegian
• miernośćPolish
• متوسطPersian
• مينځګړى،متوسطPashto
• mediocridadePortuguese
• mediocritateRomanian
• посредственность;заурядный человекRussian
• priemernosťSlovak
• povprečnostSlovenian
• prosečnostSerbian
• medelmåttighetSwedish
• ความธรรมดา; คนธรรมดาThai
• bayağılıkTurkish
• 平庸Chinese (Trad.)
• посередністьUkrainian
• متوسط قابلیت یا درجہUrdu
• tính chất xoàng xĩnhVietnamese
• 平庸Chinese (Simp.)