AFAIK many dictionaries don't have all forms (past participles, possessive "'s"-suffixed forms of all words...) Debian Linux "wbritish" contains 99k+ words, in

AFAIK many dictionaries don't have all forms (past participles, possessive "'s"-suffixed forms of all words...) Debian Linux "wbritish" contains 99k+ words, including only 3 of the words you listed (amongst, conception, conception's). $ dpkg -S /usr/share/dict/british-english wbritish: /usr/share/dict/british-english $ wc -l /usr/share/dict/british-english 99156 /usr/share/dict/british-english $ egrep -we $(echo "amongst another's cohabitate conception decontextualized depersonalization easeled else’s experientially gamified incompatibilist incongruencies oxymoronic pathologies replicable tangly telecom unimpassioned unmoving untransmittable"|tr ' ' '|') /usr/share/dict/british-english amongst conception conception's