In Crusader Kings II each character has an opinion of one another, negative or positive. Your relatives, vassals, barons, bishops, as well as all foreign characters have opinion of you, the main character. Opinion is represented by a number, red being bad, green being good, from 0 to 100. Opinion is a core element of the gameplay and manipulating it is the path to success.
The better the opinion of you is, the better benefits you will receive from a character, ranging from diplomatic to financial. It is usually imperative to keep your vassals or your leige happy.
Negative opinions of you can lead as far as wars, rebellions, abandonment, attempted assasinations, plots, and in general a character with negative opinion of you will try to get rid of you any way possible. Negative opinion of your vassals will lead to getting less taxes and less levies and all of the above it gets worse.
Listed below are some of the most common opinion modifiers, I have tried to interpret them from the game files as closely as I could:
T - time in months that modifier is active.
| Opinion Description | Effect | T | Opinion Description | Effect | T |
|---|---|---|---|---|---|
| Same dynasty | +5 | Owning a holding | -10 | ||
| Allies | +25 | Claiming title vs title holder | -20 | ||
| Mother & child | +50 | We are at war | -20 | ||
| Nominee | +50 | Infidel | -30 | ||
| Lovers | +75 | 2400 | Heretic | -35 | |
| Released a prisoner | +10 | 30 | Female heir or femal ruler | -10 | |
| Excommunication removed | +30 | 72 | Pope vs antipope | -100 | |
| Honored alliance | +25 | 60 | Plot failed | -25 | 72 |
| Pressed for my claim | +100 | 240 | Dishonorable or tyrant | -10 | 60 |
| Excomm repented sins | +20 | 60 | Declared a war | -25 | 160 |
| Priest at crusader character | +25 | Broke alliance | -30 | 120 | |
| Sending a gift | +20 | 60 | Refused to be guardian | -25 | 120 |
| Controlling anti-pope | +75 | 1000 | Insulted | -30 | 60 |
| Giving a Barony | +20 | 120 | Claiming your title | -50 | 1200 |
| Giving a County | +40 | 120 | Revoking your title | -80 | 1200 |
| Giving a Dutchy | +60 | 120 | Revoking title - other vassals | -20 | 60 |
| Giving a Kingdom | +80 | 120 | Usurped your title | -50 | 1200 |
| Giving Empire (nuts) | +100 | 120 | Title to woman (vassals) | -5 | 60 |
| Transfered vassal to you | +20 | 120 | Relative of divorced to you | -30 | 240 |
| Give County to Holy Order | +50 | 1200 | Divorced spouce to you | -50 | 240 |
| Lowered crown authority | +10 | 12 | Traitor (can imprison) | -50 | 160 |
| Marriage offer accepted | +10 | 12 | Betrothal broken | -30 | 120 |
| Charitable to you | +10 | 120 | Fired from council | -20 | 120 |
| Pope investiture approved | +20 | Courtier is a fool | -50 | 120 | |
| Pope bribed bishop | +40 | Black honor | -30 | ||
| Promised marriage | +10 | 12 | Failed to assasinate spouse | -70 | |
| Promissed title | +25 | 6 | Failed to assasinate your child | -40 | |
| Fullfilled marriage wish | +15 | 24 | Failed to assasinate vassal | -10 | |
| Happy with guardian | +10 | Attempted murder (all) | -50 | 240 | |
| Successful conversion | +20 | 12 | Your plot revealed | -25 | |
| Being greatful | +25 | 12 | Leige has a heretic advisor | -15 | |
| Defended me | +20 | Cruel | -30 | 12 | |
| Purchased indulgences | +10 | Killed close kin | -30 | 240 | |
| Repented | +10 | Sent someone to church | -40 | 120 | |
| Friend | +30 | Spouse slayer | -30 | 120 | |
| Fulfilled someone's ambition | +15 | 24 | Ignored papal demands | -30 | |
| Being proud | +40 | Ignored patriarch demands | -25 | ||
| Being paragon | +50 | Being evil murderer | -50 | ||
| Being relieved | +20 | Being worried | -10 | ||
| Perfect punishment | +20 | 12 | Angry | -30 | |
| Rekindle'd married love | +30 | Dishonorable scum | -30 | 60 | |
| Happy | +25 | Broken promise of title | -50 | 120 | |
| Flattered | +25 | Denied a marriage | -20 | 60 | |
| Participated in tournament | +10 | Denied title | -25 | 60 | |
| Won a tournament | +20 | Mocked | -20 | 12 | |
| Saved someone on battlefield | +50 | Plot scheming bastard | -50 | ||
| Opinion mentor | +25 | 240 | Refused dynasty war | -30 | |
|
For first 3 in line to throne if succession law change benefits |
+25 | 240 | Unhappy | -25 | |
| Entrusted ward | 20 | 132 | Bitter | -25 | |
| Discovered them plotting | 50 | 12 | Attempted to arrest | -50 | 120 |