noun, feminine/ɛd/plural: aides
help, support; assist
“à l'aide d'un ordinateur” — with the help of a computer
Synonyms: secours
Inherited from Middle French ayde, from Old French aide, aie, from aidier (modern Old French aider (“to help”)). The medial -d- would've been regularly lost, but was reinserted on the basis of the verb.