noun / ~する noun:

• performing a part in one's own play; playing a musical piece that one has written - four character idiom
• doing everything by oneself (from preparation to execution)
• put-up job; charade
• sock-puppeting (i.e. pretending to be more than one person on the Internet)

expression:

• prevention is better than cure; an ounce of prevention is worth a pound of cure; look before you leap; forewarned is forearmed; a stitch in time saves nine; a walking stick before stumbling [literal] - proverb

ichidan verb / intransitive verb:

• to advance on; to close in; to march on; to descend on (the enemy); to move towards; to surge forward (crowd, wave of nostalgia, wave, etc.); to rush for (the door); to inundate; to overwhelm; to push aside

noun / suffix noun:

• hole - also read めど for this sense ➜ 穴が開く
• deficit; shortage; missing person (in a team, meeting, etc.)
• vacancy; opening
• flaw
• profitable place (or item, etc.) not well known by others
• upset victory (with a large payoff)
• pit (of a theater) - slang ➜ 平土間
• hiding place - archaism
• underbelly (of society, etc.) - archaism

expression / godan ~る verb:

• to be in the news; to be talked about; to become a popular topic of conversation; to become the talk of the town; to become topical

noun:

• making use of the surrounding landscape as a part of the design of a garden; natural scenery used as the background in the landscaping of a garden

noun:

• one-sided wait for the end tile of a three-in-a-row which will finish one's hand (i.e. for a 3 while holding 1-2, or for a 7 while holding 8-9) - Mahjong term

noun:

• one-sided wait for the end tile of a three-in-a-row which will finish one's hand (i.e. for a 3 while holding 1-2, or for a 7 while holding 8-9) - Mahjong term - From Chinese ➜ 辺張待ち【ペンチャンまち】

noun:

• oni; ogre; demon
• spirit of a deceased person ➜ 亡魂
• ogre-like person (i.e. fierce, relentless, merciless, etc.) ［おに］
• it (in a game of tag, hide-and-seek, etc.) ［おに］ ➜ 鬼ごっこ【おにごっこ】
• Chinese "ghost" constellation (one of the 28 mansions) ［き］ - Astronomy term ➜ 二十八宿・朱雀【すざく】

prefix:

• very; extremely; super- ［おに］ - slang ➜ 超

noun:

• circle (sometimes used for zero) ➜ 丸【まる】
• 'correct' (when marking) ➜ 二重丸【にじゅうまる】
• symbol used as a placeholder (either because a number of other words could be used in that position, or because of censorship) ➜ 〇〇【まるまる】
• period; full stop ➜ 句点
• maru mark; semivoiced sound; p-sound ➜ 半濁点

noun:

• Inari (god of harvests, Uka-no-Mitama) ➜ 稲魂
• Inari shrine; Fushimi Inari shrine (in Kyoto)
• fox (said to be messengers of Inari) ➜ 狐
• fried tofu (said to be a favourite food of foxes) ➜ 油揚げ
• inarizushi - abbreviation - usually written using kana alone ➜ いなり寿司

ichidan verb / intransitive verb:

• to pierce; to penetrate; to soak in; to permeate
• to sting (wound or sensitive area, etc.); to smart; to twinge ［染みる・沁みる］
• to be infected (with vice); to be steeped (with prejudice); to be influenced
• to feel keenly; to make a deep impression

auxiliary:

• probably isn't (doesn't, won't, etc.)
• don't (doesn't) intend to; intend not to
• must not; (when used in an imperative sentence) don't

godan ~う verb / transitive:

• to enclose; to surround; to encircle; to fence; to wall in
• to shelter (e.g. a criminal); to shield; to hide; to protect
• to keep (e.g. a mistress)
• to store (vegetables, fruit, etc.); to preserve
• to protect - archaism

noun:

• millionaire ［ちょうじゃ］
• one's superior; one's elder; one's senior
• virtuous and gentle person - archaism
• female owner of a whorehouse in a post town ［ちょうじゃ］ - archaism
• chief of a post town ［ちょうじゃ］ - archaism ➜ 宿駅

godan ~る verb / transitive:

• to knead; to thicken into a paste (stirring over a flame)
• to polish (a plan, etc.); to refine; to elaborate; to work out
• to train; to drill; to exercise
• to gloss (silk); to soften; to degum ［練る］
• to tan (leather)
• to temper (steel) - also written as 錬る

godan ~る verb / intransitive verb:

• to walk in procession; to parade; to march - also written as 邌る

conjunction:

• used when referring to oneself in a letter to one's superior - humble language ➜ 下る
• after a time; later; down to (e.g. from the Restoration down to present day)
• used when listing items or people by decreasing worth, rank, etc.

noun / ~する noun:

• slamming one's hand into the wall in front of somebody (e.g. to stop them from leaving; often viewed as romantic) - slang
• banging on the wall (e.g. to quieten one's neighbour) - colloquialism

expression:

• burying one's head in the sand (while leaving other parts of one's body exposed); exposing one's weak point while attempting to protect oneself; hiding one's head without hiding one's bottom [literal] - idiom

particle:

• indicates possessive - occasionally ん, orig. written 乃 or 之 ➜ 乃
• nominalizes verbs and adjectives
• substitutes for "ga" in subordinate phrases ➜ が
• (at sentence-end, falling tone) indicates a confident conclusion - often ん
• (at sentence-end) indicates emotional emphasis - female language
• (at sentence-end, rising tone) indicates question

ichidan verb / intransitive verb:

• to grow senile; to be childish with age
• to be mentally slow; to be befuddled
• to play stupid; to say something stupid (oft. on purpose; esp. as part of a comedic routine)
• to become engrossed (in something) ［ほうける］

expression:

• to sacrifice something small in order to save something great; to lose a leg to save one's life; to kill a small bug and help a large one - proverb

noun / ~する noun:

• appeal (e.g. to public opinion); plea; request
• appeal (e.g. sex appeal); attractiveness; allure
• appeal (e.g. in baseball) - Sports term
• emphasizing (strong points, etc.); showing off; touting; calling attention to; playing up; using as a selling point; pitch

noun:

• written work (esp. a bound text, as opposed to a scroll)
• a text written entirely in kana
• graphic novel (esp. one created between the 12th and 19th centuries)
• notebook (for practicing kana, drawing pictures, etc.)
• rough draft

godan ~む verb / transitive:

• to read thoroughly; to read repeatedly
• to express (e.g. emotion in poetry)
• to read (extra meaning) into (something)
• to fetch (e.g. CPU inst.); to read (data into a system); to load - IT term