1 adjective based on reasoning, logicréasúnach adj1 c m uréasúnta adj3 c m uloighciúil adj2 c m uthere's a rational explanation for thattá míniú réasúnach air sin2 adjective of logical thoughtstuama adj3 c m uciallmhar adj1 c m uréasúnta adj3 c m u3 adjective having ability to reasonréasúnach adj1 c m u4 adjective MATH be expressed as ratiocóimheasta adj3 c m u