The Spanish verb 'acampar' (to camp) comes from Italian 'accampare' (to encamp), which was formed by combining the Latin prefix 'ad-' (meaning 'to, toward') with the Italian word 'campo' (field). The Italian 'campo' itself derives from Latin 'campus', which meant 'flat terrain'. This etymology reflects how camping historically involved moving toward or settling in an open field or flat area.

The Spanish word 'campo' (field, countryside) is a close relative of 'acampar'. While 'campo' directly refers to the open terrain or rural area, 'acampar' describes the action of setting up camp in such a place. Another related word is 'campamento' (campsite, camp), which refers to the place where people camp.

English speakers might recognize the connection to words like 'campus' and 'camp', which share the same Latin ancestor 'campus'. While a modern university 'campus' reflects the original meaning of a flat, open space, 'camp' and 'camping' evolved similarly to Spanish 'acampar' to refer to temporary outdoor accommodation. The word 'campaign' is also related, originally referring to military operations conducted in open country.