A gentleman is no specialist. That is, unlike a tool fashioned for a specific purpose, a gentleman is well-rounded, someone who has talents suited to any task.

before the day is done

a state of stopping; stagnate

everywhere

(only in compounds, music) hardcore

hammock

stagnant / stagnation / becoming stagnant / falling into decay

engagement, a promise to marry

参加: participation / 酸化: oxidation, combustion / 惨禍: catastrophe, disaster / 傘下: subsidiary / 産科: obstetrics / 賛歌, 讃歌, 讚歌: song of praise, hymn, paean / 山家: mountain villa

酸化: oxidize, become oxidized / 参加: participate, join, take part