All words are made up of a certain number of syllables. This is true in both French and English. Look at these English words, for instance:

fun (1 syllable)
open (2 syllables = o⋅pen)
inspector (3 syllables = in⋅spec⋅tor)
helicopter (4 syllables = he⋅li⋅cop⋅ter)
inhospitable (5 syllables = in⋅hos⋅pi⋅ta⋅ble)
invisibility (6 syllables = in⋅vis⋅i⋅bil⋅i⋅ty)

In English, each word tends to have one syllable that you stress or emphasise more than the others. For example, if you say the word “intelligent” out loud, you’ll notice that you stress the “tell” part in the middle: in⋅TELL⋅i⋅gent. If you were to stress a different syllable, it wouldn’t quite sound right. Try saying, “in⋅tell⋅i⋅GENT”or “in⋅tell⋅I⋅gent”, and you’ll hear what I mean.

fantastic – fan-TAS-tic
absolutely – ab-so-LUTE-ly
delicious – de-LI-cious

There are even some words in English whose meanings change depending on which syllable you stress. For example, the word “present” has two syllables; if you stress the first syllable (PRE⋅sent), it means a gift, but if you stress the second syllable (pre⋅SENT), it means to give something to somebody, or to be a presenter of a TV show.

“I’m going to give you a present tomorrow”

“Maria is going to present the show”

This happens quite a lot in English:

present – PRE-sent
present – pre-SENT

record – re-CORD
record – RE-cord

perfect – per-FECT
perfect – PER-fect

content – CON-tent
content – con-TENT

project – pro-JECT
project – PRO-ject

But what does all this have to do with French?

In French, it’s much easier than in English; you always stress the final syllable of every word. In 3 Minute French – Course 1, we learnt these two words: parfait (perfect) and délicieux (delicious). When you pronounce them, make sure you emphasise the final syllable. In English, we say PER⋅fect and de⋅LI⋅cious, but in French, you say, par⋅FAIT and dé-li-CIEUX.

Have a look at the pronunciation and stress of these words – I’ve capitalised the stressed syllable:

bonjour – hello (“bon(g)-JSHOOR”)
merci – thank you (“mair-SEE”)
restaurant – restaurant (“reh-stoh-RON(g)”)
garçon – boy (“gar-SON(g)”)
français – French (“fron(g)-SEH”)
madame – Mrs (“mah-DAM”)

I remember when I was in a French airport once, and I was waiting in the queue at the passport control. People were going to the passport desk one at a time, and I could more or less tell who was French and who was not French just by listening to the way they each said, “merci”. The French native speakers clearly emphasised the last syllable: mer⋅CI, whereas the non-French speakers were emphasising the first syllable a little more, and it just made them sound very… well, not French!

This is always the case in French – emphasise the last syllable:

merci
délicieux
absolument
fantastique
normal