My guess is “amateurish elocutionist” but I needed computer assistance: $ for t in matrs lctinis; do echo; grep '.*'$(echo $t | sed 's/./&.*/g') /usr/share

My guess is “amateurish elocutionist” but I needed computer assistance: $ for t in matrs lctinis; do echo; grep '.*'$(echo $t | sed 's/./&.*/g') /usr/share/dict/words | grep -Ev "s$"; done Amaterasu amateurish amateurism humanitarianism masterstroke materialism materialist materialistic materialistically maturest metatarsal miniaturist misanthropist elocutionist For my own amusement, I also came up with another grammatically plausible “parsimonious” (inserting the fewest extra letters) interpretation: > Galosh-clad win this contest handily if we chase carefully and use the occasional mantras, elocutionist!