誠に[makotoni] indeed
誠意[seii] sincerity
誠実[seijitsu] sincere
誠心誠意[seishinseii] in all sincerity
丹誠[tansei] working earnestly

忠誠[chuusei] loyalty
不誠意[fuseii] insincerity
不誠実[fuseijitsu] insincerity
至誠[shisei] sincerity

隣の芝生は青い[tonarinoshibafuhaaoi] the grass is always greener on the other side
近隣[kinrin] neighbourhood
近隣諸国[kinrinshokoku] neighboring countries
先隣[sakitonari] next door but one
善隣[zenrin] good neighbour

善隣友好[zenrinyuukou] neighbourly friendship
又隣[matadonari] second door from here
両隣[ryoudonari] both sides
隣り[tonari] neighbor (neighbour)
隣家[rinka] neighbouring house