FROM STRONG’S GREEK DICTIONARY (1890)

Strong’s Greek Dictionary (1890) — public domain, printed whole.

tachu ταχύ — takh-oo' — neuter singular of 5036 (as adverb); shortly, i.e. without delay, soon, or (by surprise) suddenly, or (by implication, of ease) readily:--lightly, quickly.

see GREEK for 5036