1. mensual   quarterly   daily   biannual   monthly   Hint Half-n-half Clue   2. semestral   biannual   weekly   monthly   winter   Half-n-half Clue   3. otoño   fortnight   monsoon   autumn, fall   biannual   Half-n-half Clue   4. semestralmente   half-yearly   spring   monthly   quarterly   Half-n-half Clue   5. monzón   annual   spring   summer   monsoon   Half-n-half Clue   6. trimestral   fortnight   daily   half-yearly   quarterly   Half-n-half Clue   7. trimestre   autumn, fall   monsoon   quarter   quarterly   Half-n-half Clue