Answer: radical

AnswerCrossword Clue
RADICALOn the fringe
RADICALBasic.
RADICALBasic
RADICALLeft-winger
RADICALSweeping
RADICALRoot-and-branch man
RADICALModerate's opposite
RADICALAvant-garde
RADICAL"Far out!"
RADICALKind of chic
RADICALSweeping change advocate
RADICALBlack Panther, e.g.
RADICALHardly moderate
RADICALExtreme.
radicalbasic
radicalor relating to the origin fundamental
radicala group of atoms that act as a unit in chemical compounds
radicalor relating to a mathematical root
radicalperson with radical ideas
radicalsigned to remove the root of a disease or all diseased and potentially diseased tissue radical surgery radical mastectomy
radicalor growing from the root of a plant radical tubers
radicalfavoring drastic reforms
radicalatom or group of atoms behaving as a unit
radicalowing from the base of a stem, from a rootlike stem, or from a stem that does not rise above the ground radical leaves
radicalof, relating to, or proceeding from a root as
RADICALOut there
RADICALExtreme
RADICALSquare root sign
RADICALSquare root symbol
RADICALFar from moderate
RADICALGroundbreaking
RADICALAny of the "Chicago Seven," e.g.
RADICALSDS member, e.g.
RADICALExtremist
RADICALPolitical extremist
RADICALWobbly, e.g.
RADICALProfoundly different
RADICALMath class symbol
RADICALUltra-left-winger
RADICALDrastic.