How many letters does the top answer for “to put in agony. shak.” have?

The most common answer is throe (5 letters).

Crossword clue: to put in agony. shak.

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

throe 5 letters web-def

severe spasm of pain

to put an end to. shak. 50% similar → period

to put to difficulties. shak. 50% similar → strait

to put to silence. shak. 50% similar → dumb