peerless, unique, one of its type and kind, not dual

instruments, apparatuses, tools, weapons, apparatus, equipments

enmity, hostility, resentment, hatred, hate, animosity, vindictiveness, malice

instruments of warfare

hostile, malicious, adversary

rival like, with enmity

maliciously

act so as to satisfy one's hostile feelings

inimical

excessive enmity, intense rivalry

deliberate malice, malice aforethought

bear malice

be bent upon injuring or harming to someone, bear malice