Tobu

Tobu: (1) to fly (2) to jump (3) to hop

飛ぶ -- v

Transformation:
Tobimasu -- v.masu
Tobimasen -- v.neg
Tonde -- v.te

Tokidoki

tokidoki: sometimes

時々 -- adv.

 Example: Tokidoki eiga wo mimasu (sometimes I watch movie)

Tomodachi

tomodachi: (1) friend (2) companion

友達 -- n.