desert

\ \ English has three distinct words desert, which come from two separate sources. Desert ‘what one deserves’ [13] (now usually used in the plural) is related, as its meaning suggests, to the verb deserve. It comes from Old French desert or deserte, which were formed from the past participle of deservir ‘deserve’. (Dessert ‘sweet course’ [17] is its first cousin, coming from French desservir ‘clear the table’ – literally ‘unserve’ – a compound verb formed, like deserve, from the verb serve but with the prefix dis- rather than de-.) The noun desert ‘barren region’ [13] and the verb desert ‘abandon’ [15] both come ultimately from dēsertus, the past participle of Latin dēserere ‘abandon’. This was a compound verb formed from the prefix dē- denoting reversal and serere ‘join’ (a derivative of which gave English ‘serried ranks’).

\ \ Cf.⇒ SERVE; SERRIED