a. 1. (pl. ثقال) Heavy, weighty or preponderant. 2. Difficult, burdensome, oppressive. 3. Troublesome, disagreeable, tedious. 4. Momentous, important; formidable. 5. Indigestible 6. Unwholesome, offensive in smell. 7. Harsh in sound. 8. That is reduplicated in pronunciation, or that contains a reduplicated consonant, or, in which a quiescent consonant is made movent. 9. (A hemze) pronounced with its full hiatus. 10. Languid, slow, sluggish, indolent, lethargic. 11. Unintelligent, stupid. 12. (rarely) Grave, sedate. 13. Improper, unbecoming, indecorous, wrong.