1. existing from birth.   deducible   incandescent   combustible   congenital   Hint Half-n-half Clue   2. damp or moist.   humid   dorsal   igneous   implicit   Half-n-half Clue   3. impervious or unpassable.   humid   finite   heterodox   impermeable   Half-n-half Clue   4. limited or bounded.   dynamic   astral   hermetic   finite   Half-n-half Clue   5. pertaining to the art of gardening.   diurnal   asymmetric   glacial   horticultural   Half-n-half Clue   6. two-year long or every two years.   brackish   carcinogenic   congruent   biennial   Half-n-half Clue   7. imbalanced or not similar about dividing line.   aromatic   asymmetric   herbivorous   glacial   Half-n-half Clue