#!/usr/bin/env bash
set -euo pipefail

ADJECTIVES=(
    ace
    apt
    fit
    fun
    odd
    top
    able
    beau
    bold
    calm
    chic
    cool
    deep
    deft
    easy
    epic
    fair
    fine
    free
    full
    game
    glad
    glow
    good
    holy
    keen
    kind
    lean
    mild
    neat
    nice
    open
    pure
    real
    snug
    spry
    tidy
    true
    warm
    wavy
    wise
    adept
    agile
    alert
    alive
    ample
    angel
    awake
    aware
    brave
    brisk
    chill
    clean
    clear
    close
    comic
    eager
    elite
    first
    fleet
    fresh
    grace
    grand
    great
    happy
    hardy
    ideal
    jolly
    light
    lithe
    loyal
    lucid
    lucky
    lunar
    magic
    merry
    nifty
    noble
    peppy
    perky
    proud
    quick
    quiet
    ready
    regal
    savvy
    sharp
    smart
    solid
    sound
    sunny
    super
    sweet
    swift
    vivid
    witty
    zesty
)

SUBSTANTIVES=(
    ox
    aim
    air
    arm
    bud
    day
    hay
    jam
    jay
    joy
    key
    map
    may
    nod
    ore
    pen
    sky
    sun
    way
    zen
    ant
    ape
    auk
    bat
    bee
    cat
    cod
    cow
    dog
    elk
    fox
    hen
    owl
    pig
    ram
    rat
    yak
    boar
    buck
    bull
    calf
    carp
    crab
    crow
    deer
    dove
    fish
    foal
    frog
    goat
    gull
    hare
    hawk
    ibex
    kiwi
    kudu
    lamb
    lion
    lynx
    mink
    mole
    mule
    newt
    orca
    oryx
    puma
    seal
    slug
    stag
    swan
    tern
    toad
    tuna
    wasp
    wolf
    zebu
    bison
    camel
    crane
    eagle
    finch
    goose
    heron
    hippo
    horse
    hyena
    koala
    llama
    macaw
    moose
    otter
    quail
    raven
    robin
    shark
    sheep
    shrew
    skunk
    sloth
    snail
    squid
    tapir
    tiger
    trout
    whale
    zebra
    ally
    arch
    area
    aura
    axis
    bank
    barn
    beam
    bell
    belt
    bend
    bird
    boat
    bond
    book
    boot
    bowl
    brim
    calm
    camp
    card
    care
    cell
    city
    clan
    club
    code
    core
    crux
    dawn
    deal
    film
    firm
    flag
    flow
    foam
    gate
    gift
    glow
    hall
    hand
    harp
    hill
    home
    hope
    host
    idea
    isle
    item
    keel
    knot
    land
    leaf
    link
    lion
    loom
    love
    luck
    mark
    moon
    moss
    nook
    note
    pact
    page
    path
    peak
    poem
    port
    ring
    road
    rock
    roof
    rule
    sail
    seal
    seed
    song
    star
    tide
    tree
    tune
    walk
    ward
    wave
    well
    wind
    wing
    wish
    wood
    work
    zone
    amity
    asset
    bloom
    brook
    bunch
    charm
    chart
    cheer
    chord
    cliff
    cloud
    coast
    comet
    craft
    crane
    crest
    crowd
    crown
    cycle
    faith
    field
    flame
    fleet
    focus
    forge
    frame
    fruit
    glade
    grace
    grain
    grove
    guide
    guild
    haven
    heart
    honey
    honor
    humor
    image
    index
    jewel
    judge
    kudos
    lumen
    lunar
    magic
    march
    marsh
    mercy
    model
    moral
    music
    niche
    oasis
    ocean
    opera
    orbit
    order
    peace
    pearl
    petal
    phase
    piano
    pilot
    place
    plaza
    prism
    proof
    pulse
    quest
    quiet
    quill
    radar
    rally
    range
    realm
    reign
    river
    route
    scene
    scope
    score
    shade
    shape
    shore
    skill
    spark
    spice
    spire
    spoke
    stone
    story
    table
    token
    trend
    tribe
    trust
    unity
    valor
    value
    verse
    vista
    voice
    world
)

rand() {
    echo $(( RANDOM % $1 ))
}

adjective="${ADJECTIVES[$(rand ${#ADJECTIVES[@]})]}"
    substantive="${SUBSTANTIVES[$(rand ${#SUBSTANTIVES[@]})]}"
        printf '%s_%s' "$adjective" "$substantive"