| 丸 | まる | circle; entirety; whole; full | n2 |
| 丸い | まるい | round; circular; spherical; curved | n5 |
| 弾丸 | だんがん | bullet; shot; shell | |
| 丸める | まるめる | to make round; to roll up; to curl up; to seduce | n2 |
| 丸太 | まるた | log; dace (Tribolodon hakonensis); test subject (of human experiments performed by Unit 731 during WWII); prostitute dressed as a Buddhist nun | |
| 丸髷 | まるまげ | traditional married woman's hair style with an oval chignon on top; type of men's hairstyle during the Edo period | |
| 日の丸 | ひのまる | red or gold circle representing the Sun; national flag of Japan; Japanese flag; Hinomaru | |
| 丸々 | まるまる | plump; rotund; chubby; entirely | |
| 丸善 | まるぜん | Maruzen (publisher) | |
| 本丸 | ほんまる | inner citadel; core; center; centre | |
| 丸裸 | まるはだか | being stark-naked; having no possessions; losing all one's belongings | |
| 丸木 | まるき | log | |
| 一丸 | いちがん | one lump; one body; one group | n1 |
| 丸薬 | がんやく | pill | |
| 睾丸 | こうがん | testicle; testicles; testes | |
| 丸出し | まるだし | (fully) exposed; bare; uncovered; in full view | |
| 丸み | まるみ | roundness; rotundity; mellowness; maturity | |
| 丸味 | まるみ | roundness; rotundity; mellowness; maturity | |
| 丸帯 | まるおび | one-piece sash | |
| 丸木橋 | まるきばし | log bridge | |
| 大丸 | だいまる | Daimaru; Daimaru (Japanese department store chain) | |
| 二の丸 | にのまる | outer citadel | |
| 丸まる | まるまる | to become rounded; to roll into a ball | |
| まん丸 | まんまる | perfect circle; cute | |
| 丸ごと | まるごと | in its entirety; whole; wholly | n1 |
| 烏丸 | うがん | Wuhuan (proto-Mongolic nomadic people) | |
| 丸腰 | まるごし | unarmed; without weapons | |
| 砲丸 | ほうがん | cannonball; shot (in the shot put) | |
| 丸坊主 | まるぼうず | close-cropped head; shaven head; being treeless (of a mountain, hill, etc.); being leafless (of a tree, shrub, etc.) | |
| 丸っこい | まるっこい | round; spherical; circular | |
| 丸焼け | まるやけ | total fire loss; completely burned | |
| 丸ぽちゃ | まるぽちゃ | plump; buxom; chubby | |
| 銃丸 | じゅうがん | bullet | |
| 丸潰れ | まるつぶれ | complete ruin; collapse; losing (something) completely (e.g. face) | |
| 丸焼き | まるやき | whole roast (e.g. pig, turkey, etc.) | |
| 丸め込む | まるめこむ | to coax; to cajole; to wheedle; to win over | |
| 丸石 | まるいし | boulder; cobble | |
| 丸呑み | まるのみ | swallowing whole; swallowing without chewing; swallowing (a story); believing unquestioningly | |
| 丸木舟 | まるきぶね | dugout canoe | |
| 丸柱 | えんちゅう | column; shaft; cylinder; round pillar (esp. in buildings) | |
| 三の丸 | さんのまる | outermost region of the castle | |
| 丸天井 | まるてんじょう | arched ceiling; vaulted ceiling; domed ceiling; circular ceiling | |
| 丸紅 | まるべに | Marubeni Corporation; Marubeni | |
| 丸見え | まるみえ | full view; plain sight; completely visible | |
| 西の丸 | にしのまる | western citadel; west wing of the Edo castle (where the heir apparent or retired shogun would live) | |
| 出丸 | でまる | small castle projecting from a larger castle; tower projecting from a larger castle | |
| 丸めこむ | まるめこむ | to coax; to cajole; to wheedle; to win over | |
| 丸太ん棒 | まるたんぼう | log | |
| 丸本 | まるぼん | reciter's book; complete set of books | |
| 胴丸 | どうまる | light torso armour opening at the right, originally used for infantry combat; dō-maru | |
| 真ん丸 | まんまる | perfect circle; cute | |
| 丸つぶれ | まるつぶれ | complete ruin; collapse; losing (something) completely (e.g. face) | |
| 丸儲け | まるもうけ | clear profit; great profit (without any investment) | |
| 丸顔 | まるがお | round face; moon face | |
| 丸損 | まるぞん | total loss | |
| 丸八 | まるはち | Cyathea mertensiana (species of tree fern) | |
| 丸型 | えんけい | round shape; circle; circular form | |
| 黒丸 | くろまる | black spot; black dot; bull's-eye; middle dot | |
| 丸のみ | まるのみ | swallowing whole; swallowing without chewing; swallowing (a story); believing unquestioningly | |
| 丸一 | まるいち | bisected-circle seal | |
| 丸刈り | まるがり | buzz cut; close crop | |
| 丸抱え | まるがかえ | completely financed; sponsored; under patronage | |
| 丸井 | まるい | Marui; Marui (retailer) | n5 |
| 丸まげ | まるまげ | traditional married woman's hair style with an oval chignon on top; type of men's hairstyle during the Edo period | |
| 丸材 | まるざい | log | |
| 丸わかり | まるわかり | understanding completely; understanding all there is to know | |
| 砲丸投げ | ほうがんなげ | shot put | |
| 丸形 | えんけい | round shape; circle; circular form | |
| 丸首 | まるくび | round-necked (T-shirt) | |
| こう丸 | こうがん | testicle; testicles; testes | |
| 丸だし | まるだし | (fully) exposed; bare; uncovered; in full view | |
| 丸投げ | まるなげ | farming out (all of a project) to subcontractors; hundred-percent outsourcing; leaving (a responsibility) entirely to someone else; offloading (a problem, work, etc.) | |
| 小丸 | こまる | komaru (type of playing cards) | n5 |
| 丸塚 | まるづか | round burial mound | |
| 三重丸 | さんじゅうまる | three concentric circles; triple circle | |
| 丸洗い | まるあらい | washing (a kimono, futon, etc.) without taking it apart; laundering whole | |
| 丸丸 | まるまる | plump; rotund; chubby; entirely | |
| 丸煮 | まるに | boiling something whole (e.g. vegetable, fish); cooking something whole | |
| 丸襟 | まるえり | round collar (of Western clothing) | |
| 花丸 | はなまる | encircled flower seal (equiv. of a gold star awarded to children for good work at school) | |
| 正露丸 | せいろがん | seirogan; beechwood extract popular as a herbal treatment for diarrhoea (diarrhea), etc. | |
| 丸で | まるで | as if; as though; just like; much as | n3 |
| 丸事 | まるごと | in its entirety; whole; wholly | n1 |
| 丸毎 | まるごと | in its entirety; whole; wholly | n1 |
| お丸 | おまる | bedpan; chamber pot; potty | |
| 丸く | まるく | in a circle; amicably | |
| 丸め | まるめ | rounding | |
| 丸傷 | たまきず | bullet wound; gunshot wound | |
| 丸優 | マルゆう | tax-free small-sum savings system (often used by the elderly and the disabled); non-tax plan for small savings | |
| 丸公 | まるこう | official price | |
| 丸刈 | まるがり | buzz cut; close crop | |
| 丸剤 | がんざい | pill | |
| 丸十 | まるじゅう | cross in a circle | |
| 丸印 | まるじるし | O mark (indicating a correct answer, agreement, approval, etc.) | |
| 丸台 | まるだい | braiding stand with a circular top | |
| 丸字 | まるじ | rounded handwriting | |
| 丸底 | まるぞこ | round-bottom | |
| 丸暴 | マルぼう | yakuza group | |
| 丸曲 | まるまげ | traditional married woman's hair style with an oval chignon on top; type of men's hairstyle during the Edo period | |
| 丸査 | マルさ | tax inspection division; tax inspector; tax dick; tax inspection | |