Eng-Thai Lexitron Dict : efficaciously, 2 found, display 1-2
Thai-Eng Lexitron Dict : efficaciously, 2 found, display 1-2
Royal Institute Thai-Thai Dict : efficaciously, not found
Budhism Thai-Thai Dict : efficaciously, not found
ETipitaka Pali-Thai Dict : efficaciously, not found
Pramaha Prasert Mantasevi's Thai-Pali Dict : efficaciously, not found