Two-dimensional　(2D)　single　crystal　transition　metal　nitrides　(TMNs)　with　exposed　active　crystal　planes　have　great　value　for　fundamental　science　and　technological　applications.　However,　it　is　still　a　great　challenge　to　synthesize　the　non-layer　crystal　structured　2D　single　crystal　TMNs,　e.g.　the　face-centered　cubic　(FCC)　2D　single　crystal　TiN,　which　would　have　distinct　properties.　Herein,　for　the　first　time,　an　induction-inhibition　strategy　was　successfully　developed　to　break　through　the　intrinsic　limitation　and　the　weak　anisotropic　growth　tendency　of　the　FCC　TiN.　Single-crystalline　TiN　nanosheet　(about　5.14　nm　thickness)　arrays　with　exposed　{111}　active　facets　were　synthesized　successfully　on　a　large　scale　by　the　new　strategy,　where　the　layer　arrays　were　induced　by　a　layered　TiNCl　intermediate　formed　by　the　chemical　vapor　deposition　reaction　of　a　new　titanium　source　(TiCl3)　with　NH3　and　the　exposed　{111}　facets　was　caused　by　the　chemisorbed　Cl　inhibitor.　The　special　2D　single　crystal　TiN　arrays　exhibited　excellent　catalytic　activity　and　durability　for　hydrogen　evolution　reaction　(HER)　from　water　electrolysis.