Synonyms for Give a leg up:

• v.

  •assist (verb)
  • expedite,
  • grease the wheels,
  • stump,
  • collaborate,
  • put on the map,
  • hype,
  • reinforce,
  • make a pitch for,
  • do for,
  • lend a hand,
  • give a boost,
  • relieve,
  • ride shotgun,
  • go down the line for,
  • benefit,
  • facilitate,
  • serve,
  • open doors,
  • cooperate,
  • sustain,
  • take care of,
  • puff,
  • work for,
  • thump,
  • work with,
  • stand up for,
  • bail out.
  •back (verb)
  • bankroll,
  • sanction,
  • angel,
  • sponsor,
  • finance,
  • grubstake,
  • stick up for,
  • abide by,
  • stand behind,
  • stake,
  • second,
  • stick by,
  • endorse,
  • ally,
  • subsidize,
  • side with,
  • underwrite.
  •encourage (verb)
  • fortify,
  • forward,
  • prevail,
  • develop,
  • reassure,
  • foster,
  • egg on,
  • instigate,
  • strengthen,
  • succor,
  • brace,
  • befriend,
  • comfort,
  • ease,
  • solace,
  • console,
  • invite,
  • spur,
  • back up,
  • approve,
  • improve.
  •support (verb)
  • chaperon,
  • set up,
  • look after,
  • buoy up,
  • earn one's keep,
  • feed,
  • guard,
  • be a source of strength,
  • nurse,
  • pay for,
  • stroke,
  • keep,
  • pick up the check,
  • put up money for,
  • bring up,
  • cherish,
  • keep an eye on,
  • stiffen,
  • care for,
  • maintain,
  • raise,
  • fund,
  • make a living,
  • nourish,
  • pay expenses of,
  • prop,
  • attend to.

• Other synonyms:

  •
  • abet.
  •
  • aid.
  •assist
  • co-operated,
  • co-operates,
  • giving a boost,
  • co-operate,
  • takes care of,
  • co-operating,
  • hyped,
  • grease wheels,
  • facilitates,
  • stood up for,
  • stood for,
  • working with,
  • took care of.
  •back
  • Allying,
  • stick for,
  • Subsidizing.
  •support
  • support,
  • supporting,
  • cares for,
  • funded,
  • looking after,
  • paid for,
  • attended to,
  • kept an eye on,
  • back,
  • looked after,
  • making a living,
  • cared for,
  • looks after.

Antonyms for Give a leg up:

• v.

  • advocate
    conceal, protest, hinder, halt, criticize, undermine, block, oppose, hurt, hide, attack, prevent, condemn, impugn, refuse, deny, reject, decrease, discourage, disapprove, dissuade, assail.
  • assist
    delay, frustrate, obstruct, stop, check, impede, injure, thwart, handicap.
  • back
    go forward, advance.
  • encourage
    deter, worsen, annoy, depress, trouble, upset, dishearten, worry, cease, dampen, dispirit, deject, ignore, disagree, uninspire, weaken, confuse, neglect.
  • support
    conclude, contradict, release, starve, abandon, let down, let go, take, finish.