How many letters does the top answer for “imparting vitality and energy” have?

The most common answer is bracing (7 letters).

Crossword clue: imparting vitality and energy

3 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

bracing 7 letters wn-def

a structural member used to stiffen a framework

refreshing 10 letters wn-def

imparting vitality and energy

tonic 5 letters wn-def

a medicine that strengthens and invigorates

imparting strength and vitality 50% similar → invigorating

lacking energy or vitality 50% similar → debilitated, enervated