Erenest is of German origin, derived from the word 'ernest', meaning 'serious'. This name was traditionally used as a nickname or a short form for Ernest, which is also of German origin and signifies 'grave' or 'respectable'. Erenest gained popularity in the late 19th to early 20th century but has since become less common. It is composed of three syllables: Eh-reh-nest.
"Interestingly, while Ernest was quite popular in 1923 and 1924 with five births each year, its popularity seemed to decline thereafter, as there were no recorded births under this name until 1950, when another five babies were named Ernest."