Forming adverbs from adjectives ending in -ant and -ent in French (French Adverbs)

In French, adverbs can be formed by using adjectives that end in -ant or -ent.

Adverbs ending in -amment or -emment in French

Look at these adverbs:

When turned into adverbs, adjectives ending in -ant and -ent act as follows:

 Attention:

Note that though the adverb couramment (fluently) is based on the adjective courant, the latter never means fluent, but can mean running (water), or common (word...).
Thus in French, you cannot express the sentence I am fluent in [...], but you use I speak [...] fluently instead.