Click on a radical to add it to (or remove it from) the query input field.
jiten.obfusk.dev
links+w foo (word) should give the same results as
\bfoo\b, +1 foo (1st word) as
^foo\b, and += foo (exact) as
^foo$. (The + prefix was chosen because
no valid regex can start with it.)
foo matches "foo".
. ^ $ * + ? { } [ ] \ | ( ) allow
matching using sophisticated patterns and rules; they are escaped
by preceding them with a backslash; e.g. \\ matches
an actual backslash.
. matches any character (except newline); e.g.
ba. matches "bar", "baz", etc.
^ matches at the start of a line; e.g.
^foo matches "foo" at the start of a line.
$ matches at the end of a line; e.g.
foo$ matches "foo" at the end of a line.
\b matches at a "word boundary" (the start or end of
a "word"); e.g. \bbar\b matches "bar" in "foo bar
baz", but not in "foobarbaz"; \B is its complement.
* matches the preceding thing zero or more times;
e.g. fo* matches "f", "fo", "foo", etc.
+ matches the preceding thing one or more times; e.g.
fo+ matches "fo", "foo", etc.
? matches the preceding thing optionally; e.g.
fo? matches "f" or "fo".
{m,n} (or just {m} instead of
{m,m}) matches the preceding thing m to
n times; e.g. fo{2,4} matches "foo",
"fooo", or "foooo".
[...] is a character class; e.g. [a-z]
matches "a" through "z"; [あいうえお] matches "あ",
"い", "う", "え", or "お".
[^...] is a complementing character class; e.g.
[^a-z] matches anything but "a" through "z".
\d matches any decimal digit (equivalent to
[0-9]); \D is its complement (equivalent
to [^0-9]).
\s matches any whitespace character; \S
is its complement.
\w matches any alphanumeric (i.e. "word" or "letter")
character; \W is its complement.
| is alternation; e.g. foo|bar|baz
matches "foo", "bar", or "baz".
(...) is grouping; e.g. ab* matches "a",
"ab", "abb", etc. whereas (ab)* matches "", "ab",
"abab", etc.; ^foo|bar$ matches "foo" at the
beginning of a line or "bar" at the end, whereas
^(foo|bar)$ matches either "foo" or "bar" as a whole
line; a backslash followed by the number of the group (starting
from 1) can be used later in the pattern to refer back to what it
(actually) matched; e.g. [a-z]{2} matches "aa",
"ab", "za", etc. whereas ([a-z])\1 matches "aa",
"bb", etc. (but not "ab" or "za").
\p{...} matches a unicode property; e.g.
\p{Han} matches kanji, \p{Hiragana}
matches hiragana, and \p{Katakana} matches katakana;
\P{...} is its complement.
\pK for \p{Han},
\ph for \p{Hiragana}, and
\pk for \p{Katakana}.
+w cat (\bcat\b) matches "cat" in "the
cat" (but not in e.g. "indicates").
+1 cat (^cat\b) matches "cat" in "cat"
or "cat (esp. the domestic cat, Felis catus)" (but not in e.g.
"category").
+= cat (^cat$) matches "cat" exactly.
+= 猫\pK (^猫\pK$) matches "猫" followed
by exactly one other kanji.
+= (\pK)\1 (^(\pK)\1$) matches e.g.
"人人".
v1.1.0-29-g2e11b44 • new: handwritten kanji recognition (kanjidraw) • new: larger japanese text setting • new: browse kanji by SKIP code • updated databases • improved dark mode v1.0.0 • new: french & spanish (& swedish) (jmdict meanings & sentences) • new: pitch data for readings in katakana • improved radical dialog • improved romaji/kana conversion • fixed crash on android 8 • various improvements & fixes v0.4.0 • updated databases: 2020 version of kyouiku kanji, more pitch data, etc. • improved help dialog • new: jlpt vocab data, search & browse by jlpt level • new: share & open jiten.obfusk.dev links in app • new: quickly switch between search forms using dropdown • new: optionally show romaji • improved button to convert romaji to hiragana and between hiragana and katakana • improved search options • improved tooltips • moved "select radical" button • fixed copying to clipboard • various small improvements & bug fixes