煩う[wazurau] to be ill
子煩悩[kobonnou] indulgent
煩さい[urusai] noisy
煩わしい[wazurawashii] troublesome
煩わす[wazurawasu] to trouble

煩雑[hanzatsu] complex
煩悩[bonnou] worldly desires
煩悶[hanmon] worry
恋煩い[koiwazurai] lovesickness
煩忙[hanbou] pressure of business

瑣末[samatsu] trivial
瑣事[saji] something small or petty
煩瑣[hansa] vexatious

煩瑣哲学[hansatetsugaku] scholastic philosophy
瑣談[sadan] overly-detailed and tedious conversation