Takdir, again, is different from luck.
Tak-dir is destiny, which some perceive as a function of Luck, whereas some think it to be a result of ones actions. I guess, hence this confusion, which many people have.
In any case, the prefix "Tak" is associated with words of Strong Action... Effort/Work... Hence, "Tak" is found in words like:
Tak-kalloof (Takleef)
Tak-kaaza (Pursue, Ask for, Demand)
Tak-To-Taaj (Crown won in battle)
and Tak-dir
Sorry, to bore you guys. I promise, no more!