Gravid is the word.
Preggos
snake
Car is another word for truck that starts with a "c".
Another word for addition which starts with the letter N is New.
This all depends on what region you are from. For example if you are from turkey another word for a snake trainer is "Yilanbaz".
"Sleuth" is another word for detective that starts with "sl".
python
Another word for elevation is altitude.
a serpent is a snake, it is a type of reptile, but it is an animal.
Another word for water that starts with the letter 'O' is oxygen dihydrogen.
Gravid
charm