Last (adjective) – dernier (m) derniére (f)
(Pronounced der-nee-ay (m) der-nee-air (f))
To remember that Last is pronounced der-nee-ay (denier) in French, use the following mnemonic:
He finished last in the race due to the hernia (dernier) he had.

Examples of dernier/derniére (last) in a sentence
La semaine dernière, je suis allée skier.
(Last week, I went skiing.)
On s'est mariés le mois dernier.
(We got married last month.)
J'ai vu ce film le week-end dernier.
(I saw this movie last weekend.)