Phrasal Verbs Using 'On' & 'Upon' - Fooling, Harming, or Treating Badly (On)

to have a secret romantic or sexual relationship with someone other than one's own partner

to continually annoy or irritate someone

to harshly criticize someone for their actions

to intentionally deceive someone by making them believe something that is not true

to keep treating someone unfairly or making unfair remarks about them

to disappoint someone by not fulfilling a commitment or promise

to take advantage of someone's feelings or weaknesses

to take advantage of those who are vulnerable or easily fooled

to suddenly confront, attack, or shout angrily at someone

to attack someone aggressively, either physically or verbally

to become unfriendly or hostile toward someone or something

to cause worry or unhappiness due to a problem or responsibility