ἄσπονδοςáspondos
GreekG7862 occurrences (KJV)
literally, without libation (which usually accompanied a treaty), i.e. (by implication) truceless
KJV renders it: implacable, truce-breaker
Where it appears
Lexical data: Strong’s Hebrew & Greek Dictionaries (1890, public domain; openscriptures, CC-BY-SA). Word tagging from the Strong’s-numbered KJV.