affixing

"The unhappy was upset about failing the history test. "

"You can create the color orange by mixing yellow and red."

"to affix a stigma to a person"

"The violinist was a master of her instrument."

"Dust particles floated in the sunbeam coming through the window. "

""The teacher said the student's idea was figuratively a gold mine, meaning it was very valuable and full of potential, but not actually made of gold." "

"An officer is attached to a certain regiment, company, or ship."

"The function of a school lunch is to provide students with nutrition. "

"In English class, we are learning how prefixes like "un-" and "re-" change the meaning of words. "

"The suffix "-able" changes "sing" into "singable"."

"Analyzing languages, the students learned that languages like Bontoc Igorot (from the Philippines) use infixes more productively than English, where examples like "fan-bloody-tastic" are relatively rare. "

"The small, closet-sized office was clearly a subjoin to the main headquarters, meant for temporary use by visiting staff. "