戒 is a Chinese hanzi, listed here under the keyword “warn”. It is built from 戈 (halberd) and 廾 (two hands). It appears as a component in 7 other characters in this index.
On KumiJi Glyph Explorer, open the parts search and type “halberd” + “two hands”. 戒 is among the results, together with every other character containing the same shapes.
Open 戒 in the interactive kanji search
to expand every part down to its smallest pieces, add your own names and mnemonic stories,
or search for other characters by their parts.