屋台骨|やたいぼねyataibone[0]heiban (flat)

1. nounframework (of a building); foundation
2. nounmainstay; support; supporter; fortune

• SynonymバックボーンNeutralA loanword for emotional or spiritual support, also a network backbone; 「屋台骨」 is about supporting a family or organization.
• Synonym骨組みほねぐみNeutralA skeletal frame or outline; stresses the basic structure, while 「屋台骨」 stresses the base that supports the whole.
• Synonym支柱しちゅうNeutralA prop or support, thing or person; stresses the supporting element itself, while 「屋台骨」 stresses the foundation of a family or organization.
• Related枠組みわくぐみNeutralA framework or system, as in 「制度の枠組み」; stresses the overall structure, while 「屋台骨」 stresses the foundation that holds everything up.
• Related骨格こっかくNeutralThe skeleton, or the basic frame of a thing; it centres on structure, not on the supporting role of 「屋台骨」.
• Related柱はしらNeutralA pillar or post, also a person who supports; broad in use, while 「屋台骨」 narrows to the foundation of one family or organization.
• Related幹みきNeutralA tree trunk, figuratively the core of something; stresses the main stem, while 「屋台骨」 stresses the base that supports the whole.
• Related中枢ちゅうすうNeutralThe centre or core, as in 「中枢神経」; points to the command centre, whereas 「屋台骨」 points to what bears the load.
• RelatedかなめNeutralThe key point or person, as in 「チームの要」; stresses the vital spot, while 「屋台骨」 stresses the supporting base.
• Related基幹きかんNeutralThe backbone or nucleus, as in 「基幹産業」; stresses the main part, while 「屋台骨」 stresses the supporting foundation.
• Related大黒柱だいこくばしらNeutralThe mainstay of a household, said chiefly of the breadwinner; 「屋台骨」 covers both the financial base and the central people.
• Related柱石ちゅうせきWrittenA pillar of the state, in written/formal prose; 「屋台骨」 is usually said of one family or organization.
• Related躯体くたいWrittenThe main structural frame of a building, a technical construction term; 「屋台骨」 is mostly figurative.
• Related主柱しゅちゅうWrittenA central pillar or mainstay, in written/formal prose and less common; 「屋台骨」 is the more usual word.

Use 「屋台骨」 for the financial base and key people holding up a family or organization, as in 「会社の屋台骨を支える」; it literally means a building's framework. For the breadwinner say 「大黒柱」; for a framework or structure 「骨組み」 or 「枠組み」; for the core or command centre 「中枢」.

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

1. 屋台やたい、家屋かおくを支ささえる梁はりや柱はしらなどの骨組ほねぐみ。
2. 一家いっかや組織そしきを支ささえる資力しりょく。また、そのために中心ちゅうしんとなる人ひと。