une longue vie
life-vie
The word "long" in French, in its feminine form, is "longue."
Ta vie
The word for 'longest' in French is 'le plus long'.
la vie
It means- Life
The French word longue is pronounced roughly the same way as the English word "long."
chirajIvanam; chirajIvitam = Long Life
"la vie marine"
When the word is "life"
Au revoir or Salut
The longest word in French is anticonstitutionellement, which is 24 letters long. This means 'anticonstitutionally'. There is actually one word which is longer, but it is 189,819 letters long, so I can't say that I know that one!