ダブる

Blend of ダブル (daburu, derived from English double) + る (-ru).

• IPA^(key): [da̠bɯ̟ᵝɾɯ̟ᵝ]

ダブる • (daburu) intransitive godan (stem ダブり (daburi), past ダブった (dabutta))

1. (informal) to be doubled, be repeated
   • 2007, Kaneko Yukiko, Shinpuru ni katazukete mainichi sukkiri kokochiyoku kurasu [Simple ways to tidy up every day and make life pleasant], page 60:

     そんな私(わたし)は家(いえ)の中(なか)で使(つか)うものもまた、「約(やく)分(ぶん)」したがる傾(けい)向(こう)がある。つまり、「これは、あれと機(き)能(のう)がダブるから、要(い)らないんじゃ?」などと、モノをなるべく減(へ)らそう減(へ)らそうとする性(せい)癖(へき)である。

     Sonna watashi wa ie no naka de tsukau mono mo mata, “yakubun” shitagaru keikō ga aru. Tsumari,“kore wa, are to kinō ga daburu kara, iranai n ja?” nado to, mono o naru beku herasō herasō to suru seiheki dearu.

     For me, I have an inclination to “reduce to lowest terms” the equipment I use around the house. In other words, I have a propensity to think, “Since this repeats the function of that, do I really want it?” and so to reduce and reduce stuff as much as possible.

2. (informal) to overlap; to happen at the same time

   Synonym: 重なる (kasanaru)

   今年(ことし)には敬(けい)老(ろう)の日(ひ)が日(にち)曜(よう)日(び)にダブる。

   Kotoshi ni wa Keirō no Hi ga Nichiyōbi ni daburu.

   This year Respect for the Aged Day falls on a Sunday.

3. (informal, education) to repeat a school year, school grade; to repeat a course

   Synonym: 留年 (ryūnen)

   • 2014, Keiō Gijuku Daigaku no ‘ima’ o yomu OB/gen’eki gakusei nara shitteokitai daigaku no shinjitsu [Keio University ‘now’, what old boys and former students really want to know about the university], page 200:

     しかし、公(こう)立(りつ)学(がく)では考(かんが)えられないくらい進(しん)級(きゅう)がきびしく、毎(まい)年(とし)３０～４０( ３０ ～ ４０)人(にん)（５％程(てい)度(ど)）が留(りゅう)年(ねん)する。怠(なま)けているとダブる、というシステムなのだ。

     Shikashi, kōritsu gaku de wa kangaerarenai kurai shinkyū ga kibishiku, maitoshi ３０ ~ ４０-nin (５% teido) ga ryūnen suru. Namaketeiru to daburu, to iu shisutemu nano da.

     But standards for promotion at the public school are almost unimaginably strict, with 30 to 40 people (about five percent) having to repeat a grade every year. You can call it a “be idle and do double” system.

4. (golf) to miss the golfball and strike the green with one's club