1. Of or relating to or formed by trees
   - arborical, arboreal, arborous

See also: arbor [N. Amer, Austral], tree

• Thucydides
• thud
• thudding
• thug
• thuggee
• thuggery
• thuggish
• Thuja
• Thuja occidentalis
• Thuja orientalis
• Thuja plicata
• Thujopsis
• Thujopsis dolobrata
• Thule
• thulium
• thumb
• thumb index
• thumbed
• thumbhole
• thumbnail
• thumbnut
• thumbprint
• thumbs-down
• thumbs-up
• thumbscrew