一門|いちもんichimon[2]nakadaka (mid-high)

1. nounfamily; clan; kin
2. nounsect; school; adherents; followers; disciples
3. noun, sumogroup of related sumo stables

• Synonym一族いちぞくNeutralThe whole family descended from one bloodline, often used of distinguished families and zaibatsu. 「一門」 can also mean a sect, school, or group of related sumo stables.
• Synonym一家いっかNeutralOne household or the whole family, a narrower scope; 「一門」 covers the large family of a single line, or a school or sect.
• Synonym家系かけいNeutralA family's lineage or bloodline, as in 「医者の家系」; it stresses descent over generations and does not refer to the group of members itself.
• SynonymクランCasualA loanword for a clan, now also very common for guilds and teams in online games. It has none of 「一門」's sense of a sect or school.
• Synonym族ぞくWrittenThe same archaic word as 「親族」 above, in its single-character form 「族」: relatives in general, not used in modern daily life; no school or lineage sense.
• Synonym家門かもんWrittenWritten/formal prose: one's family or house, stressing its status and renown, as in 「家門の誉れ」. 「一門」 can also mean a school, sect, or master's lineage, which 「家門」 cannot.
• Related家系かけいNeutralA family's lineage or bloodline, as in 「医者の家系」; it stresses descent over generations and does not refer to the group of members itself.
• RelatedファミリーCasualA loanword for family or household, also used figuratively for a close-knit group; distinctly colloquial in flavor.
• Related氏族しぞくWrittenA kin group descended from a common ancestor, used mainly in history and anthropology. 「一門」 is the more common word for a family or school.
• Related血族けつぞくWrittenA legal term for relatives connected by blood, including legally recognized kin such as adoptive ties; it excludes relatives by marriage and never means a school.
• Related家族かぞくNeutralThe most common word for one's family or the people in it. 「一門」 spans an entire family line or school, a much larger scope.
• Related親類しんるいNeutralRelatives, both by blood and by marriage; in everyday speech 「親戚」 is more common. 「一門」 points to a whole family line or a school.
• Related親族しんぞくWrittenRead 「うから」, an archaic word for relatives in general; the modern reading is 「しんぞく」. It does not carry 「一門」's sense of a school or sect.
• Related眷属けんぞくWrittenWritten/formal prose: family members or dependents, also followers and retainers. Literary and rare in daily use; it lacks 「一門」's sense of a school or lineage.
• Related閥族ばつぞくWrittenWritten/formal prose: a powerful clan or a family clique that forms a faction, with overtones of influence and exclusiveness.
• Related宗族そうぞくWrittenWritten/formal prose: the main and branch families descended from one ancestor, used mostly in historical contexts or about Chinese society.
• Related血縁集団けつえんしゅうだんWrittenA sociological term for a group of people of common descent; strongly academic and rare in daily use. It lacks 「一門」's sense of a school or master's lineage.

Use 「一門」 for the whole of one family line, or for the people of the same school, sect, or master. For everyday family members say 「家族」, for relatives say 「親類」, and for a large, distinguished family 「一族」. 「一家」 is a single household, 「家系」 a lineage, 「ファミリー」 a casual loanword; 「家門」「氏族」「血族」「宗族」 and the like belong to written, legal, or academic prose.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 一ひとつの家族かぞく。同おなじ家系かけいの一族いちぞく。
2. 同おなじ宗門しゅうもんであること。また、そのような人ひと。
3. 学問がくもん、技芸ぎげいなどで同おなじ流派りゅうはの人々ひとびと。