acknowledged

B2 · Upper Intermediate Formal

v. to tell someone that you have received their letter, email, or gift.

v. to report or signal the receipt of a communication or item. Transitive; common in professional and administrative correspondence.

“Please acknowledge this email so I know you received the files.”

“The department failed to acknowledge the receipt of my application, leaving me uncertain whether the documents had arrived before the deadline.”

B2 · Upper Intermediate

v. to show that you have seen someone by waving or smiling.

v. to show recognition of a person by a gesture or greeting.

“She acknowledged him with a quick nod as she walked past his desk.”

“Although they were rivals, the two professors acknowledged each other with a polite, if frosty, greeting in the hallway.”

C1 · Advanced Academic · Formal

adj. known by most people as being good, important, or true.

adj. generally accepted or recognised as having a particular status or quality. Often used before a noun.

“He is the acknowledged expert on the history of this city.”

“Despite the controversy surrounding his early work, he remains the acknowledged leader in the field of quantum linguistics.”