A formal English greeting

Answer 1

In the morning (before noon), you say

"good morning" or, "morning"

In the afternoon (between noon and sunset), you say

"good afternoon"

When it is dark outside,

"good evening"

Any time of day you can say,

"Nice to meet you" (formal)

"Hello" (formal),

"How are you?" (formal)

"Hi" (informal)

"Hey" (very informal),

"What's up?" (very informal)

"How's it goin' ?" (very informal)

hi yall (very very not informal)

howdy partner

poop on your heads

man go to the toilet

did u do a stinkbomb

ah ya yi

p p p pokerface p p pokerface

excuse me

blast

blasted

Answer 2

There are several ways to greet someone in the English language, however, if you want to be particularly formal, then you must say 'Hello' instead of 'Hi', which is much more informal. Other useful expressions: 'How are you doing?' or 'How is everything?', if you want to be extra-formal: 'How have you been keeping?' or 'I trust that everything is well'.