| Subject | English | French |
| energ.ind., el. | limited frequency unannounced access | accès inopiné à fréquence limitée |
| energ.ind., el. | limited frequency unannounced access | droit d'accès inopiné à faible frequence |
| energ.ind., el. | limited frequency unannounced access | Droit d'accès inopiné à fréquence limitée |
| law, tech., R&D. | to make unannounced visits to the manufacturer | faire des visites inopinées au fabricant |
| law, tech., R&D. | to make unannounced visits to the manufacturer | effectuer des visites inopinées chez le fabricant |
| gen. | she came unannounced | elle est arrivée sans se faire annoncer |
| gen. | unannounced audit | enquête inopinée |
| gen. | unannounced audit | audit inopiné |
| gen. | unannounced basis/on an | improviste/à l' |
| gen. | unannounced fire drill | exercice d'incendie inopiné |
| gen. | unannounced fire drill | exercice-surprise d'évacuation |
| tech., law | unannounced inspection | visite surprise |
| tech., law | unannounced inspection | inspection inopinée |
| tech., law | unannounced inspection | visite impromptue |
| gen. | unannounced inspection | inspection sans préavis |
| fin. | unannounced investigation | vérification sans avertissement préalable |
| comp., MS | Unannounced Transfer | Transfert non annoncé (A button on Phone Controls that transfers the current phone call without the user remaining on the line to announce the call) |