Following Mike's answer, I'd also add another step. Let's imagine you have your data in column A.
- Insert a column with the word you want to add (column B, with k)
- apply the formula (as suggested by Mike) that merges both values in column C (C1=A1+B1)
- Copy down the formula
- Copy the values in column C (already merged)
- Paste special as 'values'
- Remove columns A and B
Hope it helps.
Ofc, if the word you want to add will always be the same, you won't need a column B (thus, C1="k"+A1)
Rgds