FROM STRONG’S GREEK DICTIONARY (1890)

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

chairo χαίρω — khah'-ee-ro — a primary verb; to be "cheer"ful, i.e. calmly happy or well-off; impersonally, especially as salutation (on meeting or parting), be well:--farewell, be glad, God speed, greeting, hall, joy(- fully), rejoice.