痛い！由紀子！痛いよ。グーで殴るのはよせよ！

painful; sore; exceeding

indicates certainty, emphasis, contempt, request, etc.; used when calling out to someone; used to catch one's breath or get someone's attention; yo!

good; goo; rock (in rock-paper-scissors game); fist

indicates location of action; at; in; indicates time of action; indicates means of action; cause of effect; by; and then; so; indicates continuing action; indicates certainty, emphasis, etc.

to strike; to hit

indicates possessive; nominalizes verbs and adjectives; substitutes for "ga" in subordinate phrases; (at sentence-end, falling tone) indicates a confident conclusion; (at sentence-end) indicates emotional emphasis; (at sentence-end, rising tone) indicates question

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

to come near; to let someone approach; to bring near; to bring together; to collect; to gather; to deliver (opinion, news, etc.); to send (e.g. a letter); to contribute; to donate; to let someone drop by; to add (numbers); to have feelings for (love, good will, trust, etc.); to rely upon for a time; to depend on; to use as a pretext; to put aside; to press; to push; to force