A suffix is an affix that is added to the end of a word to create a new word with a different meaning (e.g. philia, ism).
suffix
1.(diminutive or pejorative)
a.
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
no direct translation
Dentro del bar había dos tipejos con una pinta rarísima.Inside the bar there were two characters who looked really strange.
Cuando abrí la puerta de la despensa un animalejo salió corriendo. - Sería una rata. ¡Qué horror!When I opened the door to the larder a horrible little animal ran out. - It must have been a rat. How awful!