Denshi Jisho — Online Japanese dictionary

けい light
Common word, Noun, Prefix 
かるい 1: light (i.e. not heavy); feeling light (i.e. offering little resistance, moving easily);
2: light (i.e. of foot); nimble; agile;
3: non-serious; minor; unimportant; trivial;
4: slight; small; gentle; soft;
5: easy; simple;
6: indiscriminate
Common word, Adjective 
けいし despise; slight; ignore; neglect
Common word, Noun, Suru verb 
けいゆ 1: diesel oil; gas oil;
2: light oil
Common word, Noun 
かるさ lightness
Noun 
かるめ light (weight)
Na-adjective, Noun 
かるめ light (weight)
Na-adjective, Noun 
かろい 1: light (i.e. not heavy); feeling light (i.e. offering little resistance, moving easily);
2: light (i.e. of foot); nimble; agile;
3: non-serious; minor; unimportant; trivial;
4: slight; small; gentle; soft;
5: easy; simple;
6: indiscriminate
Adjective 
けいい easy; light; simple
Na-adjective, Noun 
けいき light machine gun
Noun 
けいぐ moronity; moron
Noun 
けいど slight degree
Na-adjective, Noun, No-adjective 
けいび slight; little; insignificant
Na-adjective, Noun 
けいふ fickle; frivolous
Noun 
けいぶ contempt; scorn
Noun, Suru verb 
かるがる lightly; easily; carelessly
Common word, Adverb taking the 'to' particle, Adverb, Suru verb 
けいかい 1: casual (e.g. dress); light; nimble; jaunty; rhythmical (e.g. melody);
2: () taking a turn for the better; receding of symptoms
Common word, Na-adjective 
けいげん abatement; reduction
Common word, Noun, Suru verb 
けいしん weak earthquake
Common word, Noun 
けいそつ rash; thoughtless; careless; hasty; imprudent
Common word, Na-adjective, Noun 
けいはく frivolous; superficial
Common word, Na-adjective, Noun 
けいべつ scorn; disdain
Common word, Noun, Suru verb 
かるいし pumice stone
Noun 
かるがも spot-billed duck (Anas poecilorhyncha)
Noun, Usually written using kana alone 
かるがる lightly; easily; carelessly
Adverb taking the 'to' particle, Adverb, Suru verb 
かるくち talkative; loose-lipped; persiflage; frivolous talk
Noun, No-adjective 
カルサン hakama fashioned in the style of the pantaloons worn by the Portuguese
Ateji (phonetic) reading, Noun, Usually written using kana alone, por: 
カルサン hakama fashioned in the style of the pantaloons worn by the Portuguese
Ateji (phonetic) reading, Noun, Usually written using kana alone, por: 
かるわざ acrobatics; risky undertaking
Noun 
かろがろ lightly; easily; carelessly
Out-dated or obsolete kana, Adverb taking the 'to' particle, Adverb, Suru verb 

Found 119 words. Page one, two, three, four

You can also

Look up kanji details for 軽 かろんじる.

Try a Yahoo Jisho search for 軽 かろんじる .
Try a Goo Jisho search for 軽 かろんじる .
Try a Google search for 軽 かろんじる .