Denshi Jisho — Online Japanese dictionary

かい solution (of equation)
Noun 
とく 1: to solve; to answer;
2: to untie;
3: to comb; to untangle (hair)
Common word, Godan verb with ku ending, Transitive verb 
げす to understand; to comprehend
Godan verb with su ending, Transitive verb 
かいこ discharge; dismissal
Common word, Noun, Suru verb 
げねつ alleviation of fever
Common word, Noun, Suru verb, No-adjective 
ほどく to unfasten; to untie; to unwrap (e.g. parcel)
Common word, Godan verb with ku ending, Transitive verb, Usually written using kana alone 
わかる 1: to be understood; to be comprehended; to be grasped;
2: to become clear; to be known; to be discovered; to be realized; to be realised; to be found out
Common word, Godan verb with ru ending, Intransitive verb 
かいご comprehension (of a word)
Noun 
かいし termination
Noun 
かいじ explanation of a kanji
Noun 
かいす 1: to understand; to appreciate;
2: to interpret
Godan verb with su ending, Transitive verb 
かいそ breaking up an organization; breaking up an organisation
Noun, Suru verb 
かいり dissociation
Noun, Suru verb 
げだつ being liberated from earthly desires and the woes of man; (reaching) nirvana; moksha; mukti
Noun, Suru verb 
げどく counteraction
Noun, Suru verb, No-adjective 
ほぐす 1: (Usually written using kana alone) to unravel; to untie; to untangle; to loosen;
2: to break into small pieces (of fish, meat, etc.);
3: to relax; to ease
Godan verb with su ending, Transitive verb 
ほごす 1: (Usually written using kana alone) to unravel; to untie; to untangle; to loosen;
2: to break into small pieces (of fish, meat, etc.);
3: to relax; to ease
Godan verb with su ending, Transitive verb 
ほつす 1: (Usually written using kana alone) to unravel; to untie; to untangle; to loosen;
2: to break into small pieces (of fish, meat, etc.);
3: to relax; to ease
Out-dated or obsolete kana, Godan verb with su ending, Transitive verb 
ほつれ fray; frayed spot
Noun 
ほづす 1: (Usually written using kana alone) to unravel; to untie; to untangle; to loosen;
2: to break into small pieces (of fish, meat, etc.);
3: to relax; to ease
Out-dated or obsolete kana, Godan verb with su ending, Transitive verb 
わかり understanding; comprehension
Noun 
かす とかす 1: to comb out;
2: to melt
Common word, Godan verb with su ending, Transitive verb 
溶ける とける to melt; to thaw; to fuse; to dissolve
Common word, Ichidan verb, Intransitive verb 
ける とける 1: to be solved;
2: to loosen; to come untied;
3: to be removed (e.g. restrictions); to be cleared (e.g. misunderstandings); to be broken (e.g. spells, curses);
4: to melt
Common word, Ichidan verb, Intransitive verb 
せる げせる to understand; to comprehend
Ichidan verb, Transitive verb 
熔ける とける to melt; to thaw; to fuse; to dissolve
Ichidan verb, Intransitive verb 
融ける とける to melt; to thaw; to fuse; to dissolve
Ichidan verb, Intransitive verb 
鎔ける とける to melt; to thaw; to fuse; to dissolve
Ichidan verb, Intransitive verb 
ぐす ほぐす 1: (Usually written using kana alone) to unravel; to untie; to untangle; to loosen;
2: to break into small pieces (of fish, meat, etc.);
3: to relax; to ease
Irregular okurigana usage, Godan verb with su ending, Transitive verb 
ごす ほごす to unfasten
Godan verb with su ending 

Found 147 words. Page one, two, three, four, five

You can also

Look up kanji details for 解 とける.

Try a Yahoo Jisho search for 解 とける .
Try a Goo Jisho search for 解 とける .
Try a Google search for 解 とける .