Compounds of

• 亜科
  (n) subfamily
• 亜界
  (n) (biological) subkingdom
• 亜群
  (n) subgroup
• 亜綱
  (n) (biological) subclass
• 亜種
  (n,n-suf) subspecies
• 亜聖
  (n) sage of the second order
• 亜属
  (n) subgenus
• 亜族
  (n) (1) subgroup (of the periodic table)
  (2) (taxonomical) subtribe
• 亜炭
  (n,adj-no) lignite
  brown coal
• 亜麻
  (n,adj-no) flax
  hemp
  linen
• 亜目
  (n) suborder
• 亜門
  (n) subphylum
  (biological) subdivision
• 亜流
  (n) bad second
  epigone
  adherent
  follower
  imitator
• 亜鈴
  (n) dumbbell
• 亜連
  (n) (taxonomical) subtribe
• 唖々
  (adv) (arch) caw (cry of a crow, etc.)
• 唖唖
  (adv) (arch) caw (cry of a crow, etc.)
• 唖者
  (n) (col) mute person
• 唖蝉
  (n) voiceless cicada (female)
  Asian cicada
• 唖然
  (adj-t,adv-to) dumbfounded
  in mute amazement
• 唖鈴
  (n) dumbbell
• 娃鬟
  (n) (arch) beautiful woman
• 阿る
  (v5r,vi) to flatter
• 阿翁
  (n) (1) (arch) father-in-law (of a woman)
  (2) grandfather
• 阿亀
  (n) plain-looking woman
• 阿兄
  (n) elder brother
  my dear brother
• 阿字
  (n) the letter a (in esoteric Buddhism)
• 阿世
  (n) (obsc) timeserving
• 阿漕
  (adj-na,n) greed
  cruelty
  insistent
  insistence
• 阿比
  (n) (uk) red-throated loon (Gavia stellata)