Etymology

From Middle Chinese 學而不思則罔，思而不學則殆, whence also the Japanese 学びて思わざれば則ち罔し.

Pronunciation

• (Hà Nội) IPA^(key): [hɐwʔk͡p̚˧ˀ˨ʔ ɲi˧˧ ˀɓɜʔt̚˧ˀ˦ tɨ̞̠˧˧ tɐʔk̚˧ˀ˦ vɐwŋ͡m˦ˀ˥]
• (Huế) IPA^(key): [hɐwʔk͡p̚˨ˀ˨ʔ ɲɪj˧˧ ˀɓɜʔk̚˦˥ tɨ̞̠ɰ˧˧ tɐʔk̚˦˥ vɐwŋ͡m˧˩]
• (Hồ Chí Minh City) IPA^(key): [hɐwʔk͡p̚˨ˀ˧ʔ ɲ̻ɪj˧˥ ˀɓɜʔk̚˦ˀ˥ tɨ̞̠ɰ˧˥ tɐʔk̚˦ˀ˥ vʲɐwŋ͡m˨˦]