Denshi Jisho — Online Japanese dictionary

under (being in said condition or environment)
1: lowness (of degree, value, etc.); inferiority;
2: second volume (of two); third volume (of three)
した 1: below; down; under; younger (e.g. daughter);
2: bottom;
3: beneath; underneath;
4: just after; right after;
5: () inferiority; one's inferior (i.e. one's junior);
6: (Noun) trade-in;
7: (Noun prefix) preliminary; preparatory
Common word, Noun 
もと under (esp. influence or guidance)
Common word, Adverb 
しも 1: lower reaches (of a river);
2: bottom; lower part;
3: lower half (of the body, esp. the privates); feces (faeces); urine; menses;
4: end; far from the imperial palace (i.e. far from Kyoto, esp. of western Japan);
5: (No-adjective) dirty (e.g. dirty jokes, etc.)
かい low rank; subordinate; lower order (e.g. byte); low-end
Common word, Noun, No-adjective 
かし the legs; lower extremities
Common word, Noun 
かぶ 1: lower part; substructure;
2: subordinate (office); good and faithful servant
Common word, Noun 
げこ someone who can't drink; non-drinker; temperate man
Common word, Noun 
げた 1: geta; Japanese wooden clogs;
2: turn (in set-type proofing); upside-down character
Common word, Noun 
げや 1: retirement from public office;
2: going into opposition; losing power
Common word, Noun, Suru verb 
げり diarrhoea; diarrhea
Common word, Noun, Suru verb, No-adjective 
へた 1: unskillful; poor; awkward;
2: imprudent; untactful
Common word, Na-adjective, Noun 
かい the feelings of the people
かき the following
Noun, No-adjective 
かぐ 1: very stupid (person); great fool;
2: (Humble (kenjougo) language) oneself
かし noncommissioned officer
かし grant; bestowal; giving something to someone of low social standing (by a person of very high social standing)
Noun, Suru verb 
かず the lower illustration
かひ servant girl
かふ grant; issue
Noun, Suru verb 
かり lower official
げく the last part of a poem or Bible verse
げざ 1: squatting; prostrating oneself; crouching;
2: (Noun) musicians' box on the left side of the stage;
3: lower seat
Noun, Suru verb 
げじ command; order
Noun, Suru verb 
げす 1: low-life; sleazebag; boor;
2: person of humble rank; humble person; peasant; menial; churl; petty official
Na-adjective, Noun, No-adjective 

Found 484 words. Page one, two, three, four, five, six, seven, eight, nine, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19

You can also

Look up kanji details for 下.

Try a Yahoo Jisho search for 下 .
Try a Goo Jisho search for 下 .
Try a Google search for 下 .