"Words Are Not Enough"/"I Know Him So Well" is the fifteenth single from the British group Steps, and their fifth double A-side single. The former is a new song taken from the Gold: Greatest Hits compilation, while "I Know Him So Well" appeared on the Abbamania compilation and later Steps' own The Last Dance collection. The song "Words Are Not Enough" was slightly edited for a more radio friendly sound for the single release. This was their last single to be released before their boxing day split later that same month. The B-side was Bittersweet, which member Lisa and then-fiancé Johnny wrote together.
The video for "Words Are Not Enough" was almost fully animated, apart from a brief appearance from the band at the beginning and didn't feature a dance routine much like the rest of their music videos did. The video begins with the real Claire being sucked into a magic mirror and the rest of Steps following them. As they enter the magical world, they transform into computer animated characters. Meanwhile, the live Abbamania performance was used for the "I Know Him So Well" video.
The single entered the charts at #5 in the UK but quickly fell out of the top ten to #14 the following week. It spent eleven weeks in total in the top 75 despite sales being much lower than their previous single sales. The sales of this single were only equaled by "Here and Now"/"You'll Be Sorry". It peaked at #21 in Ireland.