1. (verb) fight against or resist strongly

• defend
• fight
• fight back
• oppose

1. (verb) fight against or resist strongly

• contend
• fight
• struggle

1. (verb) fight against or resist strongly

• drive back
• fight off
• rebuff
• repel
• repulse
• fend
• resist
• stand
• hold out
• resist
• stand firm
• withstand
• recalcitrate

1. (verb) fight against or resist strongly

• adversary
• antagonist
• opponent
• opposer
• resister
• attack aircraft
• fighter
• fighter aircraft
• battler
• belligerent
• combatant
• fighter
• scrapper
• confrontation
• opposition
• defensive
• justificative
• justificatory
• fight
• opponent
• opposing