To make a mistake, or to sin. Ignorance. "Err" is not used today in everyday conversation (other than making the sound "errrrr") but the word can be found in the bible.
"To err is human, but to forgive is divine…" Huggy Bear
"To err is human, but to forgive, well thats right on!" Bad guy in Starksy and Hutch
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug