dull

"Years of misuse have dulled the tools."

"He drinks to dull the pain."

"A razor will dull with use."

"The constant rain began to dull the vibrant colors of the posters on the wall. "

"All these knives are dull."

"He sat through the dull lecture and barely stayed awake."

"Choose a dull finish to hide fingerprints."

"My brother is a bit dull in math class; he often struggles with the concepts. "

"After a long, tiring day at work, I felt incredibly dull and didn't have the energy to cook dinner. "

"The sky was dull and overcast all day, making it a gloomy day for a picnic. "

"After years of working the same repetitive job, he became dull to the suffering of the people he was supposed to help. "

"The heavy, dull weight of the textbook made it difficult to carry. "

"Pressing on the bruise produces a dull pain."

"The loud music from the party next door sounded dull because the windows were closed. "