1. The same (as just mentioned)

Encyclopedia: Idem

• tropine
• tropism
• tropological
• troponomy
• troponym
• troponymy
• tropopause
• troposphere
• troppo
• trot
• trot out
• troth
• trotline
• Trotsky
• Trotskyism
• Trotskyist
• Trotskyite
• trotter
• trotting horse
• trou-de-loup
• troubadour
• trouble
• trouble and strife
• trouble oneself
• trouble spot