Dédire is a french third group verb. So, this verb is irregular and do not follow a regular conjugation pattern like first or second group verbs. Follow this link to see all the endings of the conjugation of most of the third group verbs : conjugation rules and endings for the second group verbs
Dédire verb is conjugated in negative form. The placement of the negative adverb follow the following rules:
- the adverb « ne »
is placed after the pronoun and before the verb.
- in simple tenses, the adverbs (« ne ...pas »
, « ne...plus »
, « ne...jamais »
, etc...) surround the verb dédire
- in compound tenses or in passive voice, the negative adverbs surround the auxiliary.