Shika
Meaning: nothing,nobody, no ~ but, only, (my interpretation: similar to -except)
Related: [dake, bakari]
Key Sentences
1) Yamada san shika tabako o suwanai/suimasen (No one but Yamada san smokes)
2) Watashi wa nihongo shika shiranai (I know nothing but japanese)
3) Sore wa Yuki ni shika hanashite-inai/imasen (I havent told it to anybody but Yuki)
4) Watashi wa gohan o ippai shika tabenakatta (I had only one bowl of rice)