Omnicompetent

Capable and skilled across every relevant area.

Reach for it when describing a fictional or exaggeratedly capable person across all domains

The novel's omnicompetent heroine could navigate, negotiate, and mend engines.

• everyday

  all-rounder

  broad useful ability suits informal praise

  not when An all-rounder may lack specialist depth.

• warm

  multitalented

  several distinct abilities deserve praise

  not when Multiple talents do not imply competence everywhere.

• professional

  versatile

  skill across varied tasks is proven

  not when Versatile allows clear limitations.

• formal

  polymathic

  wide learned expertise is the key trait

  not when Polymathic emphasizes knowledge rather than every practical skill.

• literary

  all-capable

  an explicit near-absolute quality is intended

  not when The coined form sounds mythic rather than practical.

• literary

  preternaturally capable

  fictional exceptional ability should feel conspicuous

  not when The phrase implies something beyond ordinary nature.

• incompetent
• limited
• single-skilled

• seem omnicompetent

  The fictional detective could seem omnicompetent by the final chapter.

• omnicompetent hero

  An omnicompetent hero leaves little room for a supporting team.

• supposedly omnicompetent

  The supposedly omnicompetent manager finally asked for help.

Omnicompetent is normally hyperbolic or critical; versatile and multitalented are more credible praise for real people.