Cinq mots : five words. Once you have passed ‘O’-level French (or whatever it’s called these days!) there is nothing between you and speaking perfect french but a wider vocabulary and a basic grasp of the subjunctive (see previous entry). So I shall set out five words I like from time to time for your edification:
Chanter: to sing. Un placard : a cupboard. Réussir : to succeed. Tortiller : to twist, to twirl. Un pamplemousse : a grapefruit.
Tip: to expand your vocabulary in a relatively painless way: buy, or borrow from a library (most have a European fiction section, and are pleased to let you join for a specific reason), French novels. The easiest to read for relative beginners are those that are translated from English, as you can often see (and smile?) at the English construction beneath the French phrase.