Affected by or obsessed with excessive fancy or imagination; excessively romantic or sentimental in a way that makes one unwell or unable to function properly.
Compound of 'fancy' (imagination or romantic notion) plus 'sick' (afflicted or obsessed). This appears to be a historical or archaic term describing someone metaphorically 'sick' with fancy, similar to 'lovesick' or 'homesick.'
'Lovesick' and 'homesick' are familiar to us, but 'fancysick' is rarer because we don't really use that exact metaphor anymore—though we do say people are 'obsessed' or 'daydreaming too much' for the same idea!
Complete word intelligence in one call. Free tier — 50 lookups/day.