• 弟おとうと

  younger brother, little brother, kid brother

• 弟妹ていまい

  younger brother and sister

• 弟子でし

  pupil, disciple, adherent, follower, apprentice, young person, teacher's student-helper

• 実弟じってい

  biological younger brother

• 兄弟きょうだい

  siblings, brothers and sisters

• 子弟してい

  children, sons, children and younger brothers

• 師弟してい

  teacher and student

• 義弟ぎてい

  brother-in-law (spouse's younger brother or younger sister's husband)

• 従兄弟いとこ

  cousin (male)

• 弟子入りでしいり

  becoming a pupil (of), becoming an apprentice

• 弟御おとうとご

  your younger brother

• 弟娘おとうとむすめ

  younger daughters

• 弟嫁おとうとよめ

  younger brother's wife

• 弟分おとうとぶん

  sworn younger brother, junior male peer (in a club, group, etc.)

• 令弟れいてい

  your younger brother

• 孝弟こうてい

  filial piety, brotherly love

• 舎弟しゃてい

  one's younger brother

• 賢弟けんてい

  wise younger brother, polite reference to another's younger brother, or to one's junior

• 弱弟じゃくてい

  young brother

• 高弟こうてい

  best pupil, leading disciple

• 愚弟ぐてい

  (one's) younger brother

• 小弟しょうてい

  little brother, younger brother

• 王弟おうてい

  royal prince, crown prince's younger brother

• 亡弟ぼうてい

  one's deceased younger brother

• 従弟じゅうてい

  cousin (younger male)

• 徒弟とてい

  apprentice

• 姉弟してい

  older sister and younger brother

• 皇弟こうてい

  younger brother of an Emperor

• 門弟もんてい

  disciple, pupil, follower

• 末弟ばってい

  youngest brother

• 弟さんおとうとさん

  younger brother

• 弟息子おとうとむすこ

  younger sons

• 弟小父おとおじ

  parent's younger brother, uncle

• 弟夫婦おとうとふうふ

  one's younger brother and his wife

• 弟切草おとぎりそう

  Hypericum erectum (species of St. John's wort)

• 弟殺しおとうとごろし

  killing a younger brother, fratricide

• 弟弟子おとうとでし

  younger pupil (of the same master), younger disciple, junior member

• 新弟子しんでし

  new disciple, new student, new apprentice

• 愛弟子まなでし

  favorite pupil, favourite pupil, teacher's pet

• 兄弟愛きょうだいあい

  brotherly love, fraternal love, sibling affection

• 兄弟子あにでし

  senior pupil (of the same master), senior disciple, senior student, senior member

• 兄弟分きょうだいぶん

  sworn brother, buddy, pal

• 再従弟さいじゅうてい

  younger second cousin

• 直弟子じきでし

  personal pupil

• 乳兄弟ちきょうだい

  foster sibling, foster brother, foster sister

• 内弟子うちでし

  private pupil, apprentice

• 又弟子またでし

  indirect pupil

• 孫弟子まごでし

  disciples of one's disciples

• 親兄弟おやきょうだい

  parents and siblings, one's relatives

• 相弟子あいでし

  fellow students