必携|ひっけいhikkei[0]heiban (flat)

1. no-adjective, noun (suffix)indispensable; essential; must-have
   TOEICの学習がくしゅうに限かぎらず、英語えいごを学まなぶのであれば英和えいわ辞典じてんは必携ひっけいの書しょの一ひとつでしょう。↗

   An English-Japanese dictionary is surely a must have book, not just for those taking TOEIC, but for all studying English.
2. nounhandbook; manual; vade mecumusu. in book titles

• Synonym案内書あんないしょNeutralA guidebook, either an introductory explanation of a subject or an introduction to sightseeing in an area.
• Synonym手引書てびきしょNeutralA book for introductory guidance; close to 「マニュアル」.
• Related手引きてびきNeutralGuidance: introductory instruction, showing someone the way, or even pulling strings. Focuses on the guidance itself rather than a must-carry book like 「必携」.
• Related教本きょうほんNeutralA textbook for teaching a skill, as in 「ピアノ教本」; leans toward instruction.
• Related要覧ようらんWrittenWritten/formal; a document condensing key points with charts and tables, leaning toward statistical overviews.
• Related教則本きょうそくぼんWrittenWritten/formal; a practice book for learning a technique or method — instruments, painting, sports and so on.
• RelatedガイドブックNeutralLoanword for a booklet guiding travelers or introducing events and facilities.
• RelatedマニュアルNeutralLoanword for an operations manual; covers work procedures and instruction manuals, and also manual transmission.
• RelatedガイドNeutralLoanword; a (tour) guide or guidebook, centered on guiding people or pointing the way.
• Related説明書せつめいしょNeutralA document that explains something — printed instructions or an explanatory leaflet.
• Related便覧びんらんWrittenWritten/formal word for a booklet arranged so its overview can be taken in at a glance, as in 「学生便覧」.
• Related取扱説明書とりあつかいせつめいしょNeutralUser's manual: instructions for operating machines and appliances — a more specific use than 「必携」.
• Related宝典ほうてんWrittenWritten/formal; a treasured, practical reference book, carrying a note of praise.
• Related便利帳べんりちょうNeutralA booklet of practical everyday-life information.
• Related提要ていようWrittenWritten/formal; a compendium that distills the key points.
• Related解説書かいせつしょNeutralA book explaining how something is used and what it means in detail.
• Related入門書にゅうもんしょNeutralAn introductory book written for beginners.
• Antonym不要ふようNeutralUnnecessary — no need to carry it; the opposite of 「必携」.

「必携」 marks a handbook you must carry with you or that is essential in a field, as in 「受験生必携」 and 「必携の書」. For introductory guidance use 「手引き」 or 「入門書」; for operating instructions 「マニュアル」 or 「取扱説明書」; for travel guides 「ガイドブック」; for teaching a skill 「教本」. The opposite of 「必携」 is 「不要」.

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

1. 必かならず携帯けいたいしなければならないこと。また、そのようなもの。
2. 手引き書てびきしょ。ハンドブック。