Abundant blessing or counsel
Rainen is a modern English name likely derived from the Germanic element 'ragin', meaning counsel, or as a creative nature-inspired variation of Rain. It combines the organic imagery of rainfall with the structured suffix -en, giving it a contemporary feel. While rare, it fits into the current trend of soft, two-syllable names for boys.
Less common today
Rainen isn't in the latest US Top 1000. It last peaked at #5,332 in 2009.
US births per 5-year period, 1990βpresent (SSA data).