Blindness at birth is often "congenital" (a result of genetic flaws).
consanguinity
There is no one-word substitute in English for "son-in-law."
The word you want is florist.
The word blades has one syllable.
Sportsmanship is a word substitute for spirit of game
A congenital disease is one which is present from birth and not acquired later. Eg. a congenitally blind person is one who was blind from birth and did not become blind during their life due to an illness or accident.
The word metalworking is one word.
eat, use
The word that works is idiot.
what word can I substitute for constitutes
Elevate
Traditionalist