Compounds of

• ソ連
  (n,adj-no) (abbr) (former) Soviet Union
  Union of Soviet Socialist Republics
  USSR
  (P)
• タイ
  (n) (1) (uk) sea bream (Sparidae)
  porgy
  (2) tai (species of reddish-brown Pacific sea bream, Pagrus major)
  (P)
• タイ
  (n) (uk) Thailand
  (P)
• タイ
  (n) tie
  (P)
• タグ
  (n) tag
• タコ
  (n) octopus
• タス
  (n) TASS (Russian News Agency)
  (P)
• タチ
  (n) (col) dominant partner of a homosexual relationship
• タピ
  (n) (comp) TAPI
• タフ
  (adj-na,n) tough
  (P)
• タブ
  (n) (1) tab (character)
  (2) tabulation alignment
  tabulation
  (3) tub
• タメ
  (adj-no) (1) (at the) same level
  peer
• タモ
  (n) Japanese ash
  fraxinus mandshurica var. japonica
• タラ
  (n) Japanese angelica tree (Aralia elata)
• タン
  (n) tongue
  (P)
• タ行
  (n) classification for Japanese verb with the dictionary form ending in "tsu"
  "ta" column or row of the kana syllabary
• ダー
  (n) (abbr) (sl) darling
• ダウ
  (n) (1) (abbr) Dow (i.e. Dow-Jones)
  (2) dhow
• ダオ
  (n) (comp) DAO
• ダカ
  (n) daka-
  10^1
  da
  (P)
• ダチ
  (n) (col) (abbr) friend
• ダツ
  (n) (uk) Pacific needlefish (Strongylura anastomella)
• ダテ
  (n,adj-na) (1) elegance
  dandyism
  sophistication
  having style
  (2) affectation
  showing off
  putting on an air
  appearances
  just for show
• ダニ
  (n,adj-no) (uk) tick
  mite
• ダブ
  (n) (1) dab
  (2) dove
  (3) dub
• ダボ
  (n) (1) dowel
  (n) (2) (abbr) double bogie
• ダム
  (n) (1) dam
  (adj-f) (2) dumb
  (P)
• ダメ
  (adj-na,n) (uk) useless
  no good
  hopeless
• ダル
  (adj-no) dull
• ダ行
  (n) classification for Japanese verb with the dictionary form ending in "dzu"
  "da" column or row of the kana syllabary