adj.
VERBS
▪ be , feel , look , seem , sound
▪ consider sth , regard sth as
ADVERB
▪ extremely , fairly , very , etc.
▪ highly
▪
food produced under highly ~ conditions
▪ almost
▪ a little , slightly , etc.
Unnatural is used with these nouns: ↑ angle , ↑ death