keen (adjective) keen: enthusiastic
Sinonime: central,
concealed, deep-rooted, deep-seated, emotional,
esoteric,
essential, focal, gut,
hidden,
individual,
inherent,
innate,
inside,
interior,
internal,
intimate,
intrinsic,
intuitive, inward,
personal,
psychological, repressed,
secret,
spiritual, subconscious, unrevealed,
visceral, viscerous
Antonime: outer, physical