利便|りべんriben[1]atamadaka (head-high)

1. na-adjective, nounconvenience

• Synonym便利べんりNeutralThe everyday word for convenient and the most common of this family; 「利便」 is formal and mostly appears as 「利便性」.
• Synonym便宜べんぎWrittenWritten-style word for convenience with a nuance of accommodating someone, as in 「便宜を図る」.
• Synonym重宝ちょうほうNeutralDescribes something handy that you use often and find practical, as in 「重宝する道具」.
• Synonym好都合こうつごうNeutralMeans just right or favorable to you; fits times, conditions and arrangements, as in 「好都合な時間」.
• Synonym便利さべんりさNeutralA plain noun for the degree of convenience, used in both speech and writing; less formal than 「利便性」.
• SynonymコンビニエンスNeutralLoanword for convenience, used almost only in 「コンビニエンスストア」.
• Synonym調法ちょうほうNeutralAn old-fashioned alternative writing of 「重宝」, meaning handy and useful.
• Synonym便益べんえきWrittenWritten-style word for benefit or gain with an economics leaning, as in 「費用便益分析」 (cost-benefit analysis).
• Synonym至便しべんWrittenWritten style for extremely convenient, mostly about transport access, as in 「駅至便」; a staple of real-estate ads.
• Related簡便かんべんNeutralStresses that a procedure or operation is simple and easy, as in 「簡便な方法」 or 「手続きが簡便」; 「利便」 is about convenient conditions and ease of use.
• Related有利ゆうりNeutralMeans advantageous — a situation or condition that works in your favor — not convenience.
• Related軽便けいべんWrittenWritten-style word for light and handy things; also used of light railways. Now dated and rare in modern Japanese.
• Antonym不便ふべんNeutralThe direct opposite of 「利便」: inconvenience, as in 「交通不便」.

「利便」 is formal and mostly appears as 「利便性」, as in 「利便性の向上」, for transport, services and products. For everyday convenience say 「便利」; for accommodating someone, 「便宜」; for an advantageous position, 「有利」. The opposite is 「不便」.

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

1. 便利べんりであること。都合つごうの良よいこと。