Denshi Jisho — Online Japanese dictionary

関 せき barrier; gate
Common word, Noun, Noun suffix 
関 ぜき honorific added to names of makuuchi and juryo division sumo wrestlers
Suffix, Honorific or respectful language, Abbreviation 
関知 かんち concern; business
Common word, Noun, Suru verb 
関与 かんよ participation; taking part in; participating in; being concerned in
Common word, Noun, Suru verb 
関係 かんけい 1: relation; relationship; connection;
2: participation; involvement; concern;
3: influence; effect;
4: () sexual relations; sexual relationship;
5: (Noun suffix) related to ...; connected to ...
Common word, Noun, Suru verb, No-adjective 
関西 かんさい Kansai (south-western half of Japan, including Osaka)
Common word, Noun 
関心 かんしん concern; interest
Common word, Noun 
関節 かんせつ joints (knee joint, elbow joint, etc.)
Common word, Noun, No-adjective 
関税 かんぜい tariff (import tax); duty; customs
Common word, Noun 
関門 かんもん barrier; gateway
Common word, Noun 
関連 かんれん relation; connection; relevance
Common word, Noun, No-adjective, Suru verb, Suffix 
関取 せきとり ranking sumo wrestler in the makuuchi (senior-grade) or juryo (junior-grade) divisions
Common word, Noun 
関脇 せきわけ sumo wrestler of the third highest rank
Common word, Noun 
関る かかわる 1: to be affected; to be influenced;
2: to be concerned with; to have to do with;
3: to stick to (opinions)
Godan verb with ru ending, Intransitive verb 
関鍵 かんけん locking doors; lock and key; vital point
Noun, Obscure term 
関数 かんすう function (e.g. math, programming, programing)
Noun, Computer terminology 
関西 かんせい Kansai (south-western half of Japan, including Osaka)
Noun 
関説 かんせつ allusion; alluding; related explanation
Noun, Suru verb, Obscure term 
関説 かんぜい allusion; alluding; related explanation
Out-dated or obsolete kana, Noun, Suru verb, Obscure term 
関代 かんだい relative pronoun
Noun, Linguistic term, Abbreviation 
関電 かんでん electrode
Noun 
関東 かんとう Kantou (eastern half of Japan, including Tokyo)
Noun 
関頭 かんとう crossroads; crucial point
Noun 
関白 かんぱく chief advisor to the Emperor (adviser)
Noun 
関副 かんふく relative adverb
Noun, Linguistic term, Abbreviation 
関聯 かんれん relation; connection; relevance
Noun, No-adjective, Suru verb, Suffix 
関所 せきしょ barrier; checking station
Noun 

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