Pronunciation / The final consonant is often silent

There are no explicit rules for when pronouncing or not the final consonant in French.

We do not pronounce the "r” in the ending "er”, such as in "loyer”, "garder”, but it is pronounced it in the word "mer” and in verbs ending with "-ir” with the infinitive form "dormir”, "sortir”.

In general, we do not pronounce the final consonant of words ending with "d”, "p”, "s”, "t”. Memorize the word "DePoSiTo” which contains these consonants.
 

Audio file play stop mute max volume     repeat   Update Required To play the media you will need to either update your browser to a recent version.	grand	Audio file play stop mute max volume     repeat   Update Required To play the media you will need to either update your browser to a recent version.	mois
Audio file play stop mute max volume     repeat   Update Required To play the media you will need to either update your browser to a recent version.	trop	Audio file play stop mute max volume     repeat   Update Required To play the media you will need to either update your browser to a recent version.	petit

The final consonant of an adjective is pronounced before a vowel. It is called the liaison:

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un petit appartement.

Pronouncing the “ s ” at the end of "plus ”

We do not pronounce the "s” at the end of "plus”:
 
- before a word starting with a consonant:

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Ce logement est plus [ply] petit.

- in the expression "ne... plus ”:

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Ce logement n’est plus [ply] à louer.

We pronounce the "s” at the end of "plus”:

- before a word starting with a vowel:

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Ce logement est plus [plyz] original.

-  in the expression "plus de”:

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Ce logement a plus [plys] de pièces.

- for the plus” sign in mathematics (+). We pronounce [s] before a consonant and [z] before a vowel.

Audio file play stop mute max volume     repeat   Update Required To play the media you will need to either update your browser to a recent version.	Il faut un bureau plus [plys] deux chambres.
Audio file play stop mute max volume     repeat   Update Required To play the media you will need to either update your browser to a recent version.	Ce logement compte deux pièces plus [plyz] une.