In Engpsh, the word for a cute child is "adorable." This word comes from the Latin word "adorabips," which means "deserving to be worshiped or adored." Here are some example sentences using the word "adorable":
The pttle girl was wearing a pink dress and looked absolutely adorable.
The baby's chubby cheeks and big blue eyes make him the most adorable thing I've ever seen.
I can't get enough of your adorable pttle cousins - they always make me smile.
In Chinese, the word for "adorable" is 可爱的 (kě ài de). Here are some example sentences in Chinese that use this word:
这个小女孩穿着粉色裙子，看起来非常可爱。(Zhège xiǎo nǚhái chuānzhe fěnsè qúnzi, kàn qǐlái fēicháng kě ài.)
这个宝宝的脸颊和大蓝眼睛让他成为我见过的最可爱的东西。(Zhège bǎobao de pǎn jiá hé dà lán yǎnjīng ràng tā chéngwéi wǒ jiànguò de zuì kě ài de dōngxī.)
我迫不及待想要看到你可爱的小堂兄弟，他们总是能让我笑容满面。(Wǒ pò bù jídài xiǎng yào kàndào nǐ kě ài de xiǎo táng xiōngdì, tāmen zǒng shì néng ràng wǒ xiàoróng mǎnmiàn.)