The term 'REALLY WEIRD' can be described by the crossword solutions BIZARRE (7 letters), CREEPY (6 letters), OUTRE (5 letters), and EERIE (5 letters). Bizarre means strange or unusual in an unexpected way, while CREEPY implies something that is unsettling or frightening. OUTRE is a French word meaning extraordinary or unconventional, and EERIE is a feeling of fear or uneasiness. Together, these words describe something that is really weird.