noun:

• wharf roach (species of isopod closely related to the sea slater; Ligia exotica)

noun:

• stealthy steps
• spurt to overtake a leading horse just before the finish line

noun / ~の noun:

• atavism; throwback; reappearance of an earlier characteristic; skipping a generation; reversion to ancestral type

expression / godan ~る verb:

• to improve one's skill (esp. at calligraphy or drinking larger amounts of alcohol) - idiom

noun:

• thin strip of wood smeared with sulfur, used to light a fire

noun:

• popularly accepted "on" reading of a kanji (as opposed to those derived from Chinese)

noun:

• seeds
• producer-driven solutions; ideas, products, services, etc. proposed by a company to consumers

expression / noun:

• coming to nothing ➜ 水泡
• bubble on the surface of water
• something that is short-lived

noun:

• rematch (e.g. in sumo when the match is too close to decide)

noun:

• chart used to keep track of a wrestler's records during the tournament - Sumo term

noun:

• grand champion considered to be truly great, usually with over 10 makuuchi tournament wins - Sumo term

expression / godan ~す verb:

• to have training bouts with one's junior during practice (of a senior wrestler) - Sumo term

noun / ~する noun:

• change in mentality; changing one's way of thinking; adjusting psychologically to shifting circumstances - four character idiom

noun:

• a good chance coming along; the time has come (for, to, when...); opportunity knocking - four character idiom

expression:

• not able to escape an urgent problem without making some sacrifice

noun:

• money needed to buy a geisha or prostitute out of bondage ➜ 身請け

expression:

• cannot live even a minute without someone or something; meaning the world to one

expression:

• without being able to help oneself; against one's will; compelling; pressing; irresistible ➜ 止むに止まれない・止むに止まれぬ

expression / adjective:

• useless; stupid; good-for-nothing ➜ 仕様が無い
• having no way to do ...

godan ~く verb:

• to compete with each other (e.g. out of pride, obstinacy, etc.)

expression:

• giving something a try because one has nothing to lose ➜ 駄目元

noun:

• Cain complex (jealousy of a sibling, ultimately leading to hatred)

noun:

• plan to overcome an obstacle or break out of a deadlock; breakthrough solution

expression:

• phrase used to express the uncertainty or lack of intent in what precedes it

noun:

• invitation letter (e.g. document in support of a visa to enter Japan)