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by-fantasy
by-fantasy n.
Brit. 
/ˈbʌɪˌfantəsi/
, /ˈbʌɪˌfantəsi/U.S. /ˈbaɪˌfæn(t)əsi/
/ˈbaɪˌfæn(t)əsi/ΘΚΠ
the mind > mental capacity > perception or cognition > faculty of imagination > fancy or fantastic notion > deceptive fancy or illusion > [noun] > that leads astray
by-fantasy1609
the mind > mental capacity > knowledge > conformity with what is known, truth > deceit, deception, trickery > deception by illusion, delusion > [noun] > an instance of, illusion > leading astray
ignis fatuus1592
by-fantasy1609
1609 R. Bernard Faithfull Shepheard (new ed.) 14 Interrupted with wauering thoughts and by-fantasies.
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as lemmas