to enter (a country, territory, etc) by military force - (transitive)
to occupy in large numbers; overrun; infest  - (transitive)
to trespass or encroach upon (privacy, etc)  - (transitive)
to enter and spread throughout, esp harmfully; pervade  
WordReference Random House Learner's Dictionary of American English © 2025
in•vade /ɪnˈveɪd/USA pronunciation  
v., -vad•ed, -vad•ing. 
WordReference Random House Unabridged Dictionary of American English © 2025- to enter forcefully as an enemy;
go into with hostile intent: [~ + object]The dictator invaded his neighboring states.[no object]He was ready to invade. - to enter and affect in a harmful or destructive way:[~ + object]viruses that invade the bloodstream.
 -  to intrude upon;
encroach or infringe on:[~ + object]to invade someone's privacy. - to enter or penetrate:[~ + object]City dwellers invaded the suburbs.
 
in•vade 
(in vād′),USA pronunciation v., -vad•ed, -vad•ing. 
v.t.
v.i.
 in•vad′a•ble, adj. 
in•vad′er, n.
 
v.t.
- to enter forcefully as an enemy;
go into with hostile intent:Germany invaded Poland in 1939. - to enter like an enemy:Locusts invaded the fields.
 - to enter as if to take possession:to invade a neighbor's home.
 - to enter and affect injuriously or destructively, as disease:viruses that invade the bloodstream.
 - to intrude upon:to invade the privacy of a family.
 - to encroach or infringe upon:to invade the rights of citizens.
 - to permeate:The smell of baking invades the house.
 - to penetrate;
spread into or over:The population boom has caused city dwellers to invade the suburbs. 
v.i.
- to make an invasion:troops awaiting the signal to invade.
 
- Latin invādere, equivalent. to in- in-2 + vādere to go; see wade
 - 1485–95
 
in•vad′er, n.
- 1, 2.See corresponding entry in Unabridged penetrate, attack.
 
Collins Concise English Dictionary © HarperCollins Publishers::
'invading' also found in these entries (note: many are not synonyms or translations):
Flodden
 - Hun
 - IgA
 - Montezuma's revenge
 - Nanjing
 - Tamerlane
 - William I
 - complement fixation
 - cryptozoite
 - heartworm
 - indigo snake
 - interferon
 - invasion
 - invasive
 - noninvasive
 - offensive
 - opsonin
 - pearl
 - phagocyte
 - phytoalexin
 - quisling
 - ravage
 - scorch
 - scorched earth policy
 - unoccupied
 - white blood cell