these are the words you will use every single day.
saying hi
hallohello
hoi / heyhi
goedemorgengood morning
goedemiddaggood afternoon
goedenavond / goede avondgood evening
saying bye
dagbye (also: hi!)
doeibye (casual)
tot ziensgoodbye / see you
tot strakssee you soon
tot morgensee you tomorrow
welterusten / goedenachtgood night
"dag" works for both hi and bye — super handy. and match the time of day: goedemorgen / goedemiddag / goedenavond.
easiest way to rememberhi → hallo / hoi. bye → dag / doei / tot ziens.