Definition of rando in US English:

rando

noun

US
informal
  • A person one does not know, especially one regarded as odd, suspicious, or engaging in socially inappropriate behavior.

    ‘some rando asked to take her photo’
    ‘getting yelled at by randos doesn't bother me’
    • ‘He is not cheating on you or flirting with randos online.’
    • ‘From there, he was off to different parts of New York and the country, looking for the right randos to photograph.’
    • ‘It's no longer just the randos or long-lost childhood acquaintances who show up on your FB feed.’
    • ‘They're not going to believe that this blonde chick was just a rando, and an innocent rando at that.’
    • ‘Is that a message from some rando, a spammer, or the nice guy you met yesterday?’
    • ‘Why would I go to your party, you rando?’
    • ‘Don't ever take anything from some rando on the streets of Gotham.’
    • ‘Caroline and Stefan were still just hanging around a college bar tormenting randos for fun.’
    • ‘I tend to talk to randos lots though.’
    • ‘After a few encounters, I never found it appealing to talk to a rando again.’

adjective

US
informal
  • ‘I don't want some rando dude on the street telling me he thinks I'm hot’
    short for random (sense 2 of the adjective)
    ‘on a rando Sunday I was looking for a place to chill with some friends’
    • ‘The family is so big because the dad, Mike, kind of gets married to some rando woman who has three kids of her own.’
    • ‘Regina answered a few questions and a rando lady ran into the room and put a baby in her lap.’
    • ‘By "party," he means it was literally me and like 5 rando people who had also just wandered into my apartment because I had beer.’
    • ‘Right now, the way comments work on YouTube is that the last rando person who said anything is featured up toward the top.’
    • ‘It's about some rando guy who lives in a cabin even though he doesn't appear to serve any point on the show.’
    • ‘Then rando gossip magazines followed suit and here we are again.’
    • ‘You're just asking for more trouble than help by seeking rando suggestions online.’
    • ‘I tried to get everything in there, but sorry it's so rando!’
    • ‘I sleep any time I don't have caffeine jetting through my veins, but it's pretty rando.’
    • ‘However famous a celebrity may be stateside, you can unearth a commercial they filmed for some rando foreign product on the sly.’

Origin

Early 21st century: shortening of random.

Pronunciation

rando

/ˈrændoʊ//ˈrandō/