How many letters does the top answer for “tending to penetrate; having the power of entering or piercing” have?

The most common answer is penetrating (11 letters).

Crossword clue: tending to penetrate; having the power of entering or piercing

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

penetrating 11 letters wn-def

tending to penetrate; having the power of entering or piercing

penetrative 11 letters wn-def

tending to penetrate; having the power of entering or piercing