水筒から水がこぼれないようにキャップをきちんと閉めて

N2 水筒 suitou canteen, flask, water bottle N5 水 mizu water N5 ない nai there isn't, doesn't have N3 きちんと kichinto properly, neatly, accurately

N5 水 sui / mizu, mizu- water, eau, agua N2 筒 tou / tsutsu cylinder, pipe, tube N3 閉 hei / to.jiru, to.zasu, shi.meru, shi.maru, ta.teru closed, shut, fermer

N4 〜ようだ you da Indicates assumption based on evidence or impression, attaches to verb adjective or noun, means it seems that N5 〜から kara Indicates cause or reason, equivalent to because or since, connects two clauses explaining reason N5 〜が ga Marks the grammatical subject, highlights new information, can also show slight contrast in some sentences N5 〜を o Marks the direct object of an action, appears before the verb, shows what receives the action N5 〜に ni Indicates destination, target, arrival point, specific time, or person receiving an action N5 〜と to Indicates company, quotation, natural condition, complete list, or direct connection between elements N5 〜か ka Marks a question, alternative, or uncertainty, appears at the sentence end or between options N5 〜よ yo Sentence ending particle adding information to listener, emphasizes statement, expresses certainty or warning