to desert someone (as in the way people are deserting Trump for betraying them)

I was trying to make sense of the word desert and realized I had the wrong spelling when I used dessert. So, dessert is like ice cream or cake only. where as desert is not only like the Mojave Desert in California it is also to desert someone too I found. 

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de·sert¹

/dəˈzərt/

verb

verb: desert; 3rd person present: deserts; past tense: deserted; past participle: deserted; gerund or present participle: deserting

1. abandon (a person, cause, or organization) in a way considered disloyal or treacherous.

   "we feel our public representatives have deserted us"

   h

   Similar:

   abandon

   leave

   give up

   cast off

   turn one's back on

   throw over

   betray

   jilt

   break (up) with

   neglect

   shun

   leave high and dry

   leave in the lurch

   leave behind

   strand

   leave stranded

   maroon

   relinquish

   renounce

   walk/run out on

   rat on

   drop

   dump

   ditch

   give someone the push

   give someone the big E

   bin off

   forsake

   renege on

   repudiate

   forswear

   wash one's hands of

   have no more truck with

   have done with

   abjure

   disavow

   apostatize

   recant

   disprofess

   abandoned

   forsaken

   cast off/aside

   thrown over

   betrayed

   jilted

   shunned

   neglected

   stranded

   marooned

   relinquished

   renounced

   forlorn

   bereft

   dumped

   ditched

   dropped

   h

   Opposite:

   stand by

• (of a number of people) leave (a place), causing it to appear empty.

  "good weather came after the summer hordes had deserted the beaches"

  h

  Similar:

  empty

  uninhabited

  unoccupied

  unpeopled

  abandoned

  evacuated

  vacant

  vacated

  untenanted

  tenantless

  unfrequented

  neglected

  secluded

  isolated

  desolate

  lonely

  solitary

  godforsaken

  forlorn

  h

  Opposite:

  crowded

  populous

(of a quality or ability) fail (someone), especially at a crucial moment when most needed.

"her luck deserted her"

Military

(of a soldier) illegally run away from military service.

"his life in the regiment had been such a hell that he decided to desert"

h

Similar:

abscond

defect

run away

make off

decamp

flee

fly

bolt

turn tail

go absent without leave

take French leave

depart

quit

escape

go AWOL

h

Opposite:

stay

1. • 
     

Origin

late Middle English: from Old French deserter, from late Latin desertare, from Latin desertus ‘left waste’ (see desert²).

des·ert²

/ˈdezərt/

noun

noun: desert; plural noun: deserts

1. a dry, barren area of land, especially one covered with sand, that is characteristically desolate, waterless, and without vegetation.

   h

   Similar:

   wasteland

   waste

   wilderness

   wilds

   dust bowl

   barren land

• a situation or area considered dull and uninteresting.

  "a cultural desert"

  h

  Similar:

  uninteresting place/period

  unproductive place/period

  wasteland

1. • 
     

adjective

adjective: desert

1. like a desert.

   "overgrazing has created desert conditions"

   h

   Similar:

   arid

   dry

   moistureless

   dried up

   parched

   scorched

   burnt

   hot

   burning

   torrid

   barren

   bare

   stark

   uncultivatable

   infertile

   nonfertile

   unproductive

   unfruitful

   dehydrated

   sterile

   h

   Opposite:

   fertile

• uninhabited and desolate.

  "desert wastes"

  h

  Similar:

  uninhabited

  empty

  solitary

  lonely

  desolate

  bleak

  dismal

  waste

  wild

  uncultivated

  untended

  untilled

1. • 
     

Origin

Middle English: via Old French from late Latin desertum ‘something left waste’, neuter past participle of deserere ‘leave, forsake’.

Use over time for: desert