Synonyms for Take a stab at:

• v.

  •attempt (verb)
  • try one's hand at,
  • have a go at,
  • solicit,
  • go the limit,
  • give old college try,
  • shoot the works.
  •essay (verb)
  • put to the test.
  •guess (verb)
  • surmise,
  • size up,
  • suppose,
  • take a shot at,
  • lump it,
  • suspect,
  • reckon.
  •try, make effort (verb)
  • attempt.
  •try to figure out; imagine (verb)
  • guess.

• Other synonyms:

  •Other relevant words:
  • aim,
  • assay,
  • attack,
  • believe,
  • calculate,
  • chance,
  • conjecture,
  • deduce,
  • deem,
  • divine,
  • endeavor,
  • essay,
  • estimate,
  • experiment,
  • fancy,
  • fathom,
  • give it a try,
  • guesstimate,
  • happen upon,
  • hazard,
  • hypothesize,
  • infer,
  • judge,
  • labor,
  • offer,
  • opine,
  • penetrate,
  • pick,
  • postulate,
  • predicate,
  • predict,
  • presume,
  • pretend,
  • pursue,
  • push,
  • reason,
  • seek,
  • select,
  • solve,
  • speculate,
  • strive,
  • struggle,
  • suggest,
  • survey,
  • tackle,
  • take on,
  • test,
  • theorize,
  • think,
  • toil,
  • travail,
  • try out,
  • undertake,
  • venture,
  • work,
  • work out,
  • have a go,
  • exert oneself,
  • dare say,
  • do level best,
  • give a fling,
  • give a whirl,
  • give it a go,
  • go out on a limb,
  • have a crack,
  • have a shot,
  • have at it,
  • jump to a conclusion,
  • make a run at,
  • take a whack at,
  • take best shot,
  • think likely,
  • give best shot.

Antonyms for Take a stab at:

• v.

  • attempt
    be idle, forget, neglect, be lazy.
  • essay
    pass, idle, relax, laze, rest.
  • guess
    reject, wonder, ignore, misunderstand, disbelieve, question, prove, abstain, measure, refuse.