Optimism is that rare quality that is often symbolized by a single word. In life, one often underestimates the power of words in spreading positivity and joy. 

The etymology, the multiplicity of meanings – all contribute towards the power of words. Here are a list of positive words which start with the letter k and spread cheer in dark days:

Positive Words Starting With K

Kleptomania

Kinetic

Kind-hearted

Kinship

King

Kindness

King

Kite

Kill

Killjoy

Karma

Keepsake

Kosher

Kempt

Keychain

Kaleidoscope

Karyokinesis

Katzenjammer

Kink

Kelp

Keen

Kingdom

Kerastase

Keratin

Keystone

Kinescope

Kneel

Knowledge

Kirsch

Kippers

Kettle

Kleptocracy

Kith

Knack

Knock

Keystroke

Keyword

Kilogram

Kilobyte

Kilometre

Kerning

Keylogger

Keypad

Kinesthetic

Klutzy

Kinkle

Kinetoscope

Kinkajou

Kalamkari

Kakorrhaphiophobia

Kainotophobia

Kalimba

Kalpis

Kamagraphy

Kame

Kelpie

Kern

Killas

Kilfud-yoking

Kinderspiel

Kissel

Knosp

Kob

Koniology

Koine

Kouros

Kraurosis

Kore

Knobber

Klendusic

Knag

Knickpoint

Knitch

Kreng

Krasis

Knop

Koto

Komatik

Kneelet

Knissomancy

Knout

Kobold

Klipspringer

Kleenebok

Kincob

Klangfarbe

Kistvaen

Kilobase

Killock

Killcrop

Kilderkin

Keyline

Keylime

Kif

Kidology

Kilolitre

Kumquat

Krypton

Krone

Kraal

Kowtow

Knuckleduster

Ken

Kenspeck

Kewt

Kiffle

Kinephantom

Kintle

Klazomania

Kleptoparasite

Knub

Knurry

Kungle

Kung fu

Knickknackatory

Knickknacket

Kintraclatter

Kintraclash

Kilterums

Kiddlewink

Kickshaws

Kicky-wicky

Kickmaleerie

Kennawhat

Kecker

Kegling

Keratic

Kerplunk

Kimchi

Kinglet

Knap

Knish

Kibble

Kicksie-wicksie

Kirschwasser

Kakaki

Kafuffle

Krak

Kolkhoz

Krakow

Kudzu

Kvetch

Klezmer

Keister

Knucklehead

Kudo

Knurl

Kedge

Keck

Keeve

Kiev

Keloid

Katharometer

Kemb

Keld

Keelson

Kerygma

Kerygmatic

Ketjack

Ket

Kex

Khor

Kier

Kidlet

Kenoticism

Kathenotheism

Kerseymere

Khaddar

Kiang

Kibe

Kidder

Kettle Stitch

Kazatzka

Karezza

Kalyptra

Kaneh

Kantikoy

Kantele

Katathermometer

Kea

Kersey

Kerf

Kermesse

Kermes

Kente

Keratogenic

Kazachok

Kausia

Kava

Kagu

Kaka

Karozzin

Kamelaukion

Kamerad

Kasha

Katabothron

Kantar

Kaleidophone

Kamik

Karekoyle

Kalegarth

Kanurd

Kalon

Kakidrosis

Kalopsia

Kraken

Kaffeeklatsch

Knitwear

Kidney machine

Kidney stone

Kidney bean

Ketchup

Kidnap

Kilo

Kickboxing

Kilovolt

Kilowatt

Kart

Kale

Kamikaze

Kaiser

Keel

Kedgeree

Kazo

Kapok

Karst

Kasbah

Kayak

Keelhaul

Kennel

Kelvin

Kerb

Kerbstone

Ketch

Kestrel

Kiloton

Kettledrum

Kibbutz

Kibosh

Kelim

Kiln

Kilim

Kinswoman

Kitbag

Kitsch

Kiwi

Klaxon

Knifepoint

Knobble

Kohlrabi

Kookaburra

Kirking

Kippage

Kingly

Kittenish

Kayoed

Kantian

Karyokinesis

Katabatic

Katari

Katabolic

Katharobic

Keynesian

Kitschy

Knackered

Knave

Knavish

Knobbly

Knockabout

Knoll

Knockdown

Knotty

Kyphosis

Kyphotic

Klutz

Kafkaesque

Kampuchean

Kechua

Keyed

Kokka

Kiplingesque

Knowable

Koranic

Knowing

Kept

Khaki

Keeled

Kaput

Katanatic

Kerosene

Knowledgeable

Kingpost

Kir

Kinchin

Kip

Kinematics

Knarred

Kachina

Kissable

Krobylos

Karyon

Karyoplasm

Knowingly

Kitty

Knobby

Knob

Knackish

Knightly

Kook

Kvell

Kwanzaa

Klatch

Kiosk

Kilohertz

Knee-pleat

Kohl

Knee-high

Kirtle

Kidskin

Kaross

Kimono

Karakul

Kyphoplasty

Keto

Ketones

Keratinocytes

Keratectomy

Keloid

Kegel

Keg

Krummhorn

Kurgan

Kvass

Kakistocracy

Ktenology

Kumiss

Kudu

Kurtosis

Kummel

Kymatology

Kyrie

Kyriolexy

Kylin

Kritarchy

Kindergartner

Keratinization

Kabbalist

Kebab

Kaftan

Kit

Koala

Kid

Key

Kitchenette

Kangaroo

Kidglove

Kef

Knead

Kenspeckle

Karmic

Knockout

Kismet

Kinfolk

Kindred

Kindly

Kindle

Kilter

Kilt

Killer

Karaoke

Kabbalah

Kahuna

Koan

Karat

Kindliness

Kerfuffle

Kerchief

Kingfisher

Kernel

Kitchenware

Kremlin

Kneecap

Knicker

Knickerbockers

Kaolin

Knight

Keyboard

Knickknacks

Kawaii

Kudos

Kindergarten

Kinetics

Kickoff

Kickstart

Knife

Kitten

Knit

Knock

Knot

Know

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