These suffixes express how much choice the subject has regarding the action described, or how predisposed the subject is toward performing it.

-nIS (need, must, have to)

To express that something is necessary — that someone must or needs to do something — Klingon uses the verb suffix -nIS ("need").

• bISopnIS - you need to eat (Sop eat)
  
• qama' vIQaw'nIS - I must destroy the prisoner (qama' prisoner, Qaw' destroy).
• vIleghnIS - I need to see him/her (legh see)

This suffix indicates that there is a requirement or obligation, often implying that consequences will follow if the action isn't done.

-qang (willing)

• Heghqang - he/she is willing to die (Hegh die)
• qaja'qang - I am willing to tell you (ja' tell)

-rup (ready, prepared - beings)

• Heghrup - he/she is ready to die (Hegh die)
• qaleghrup - I am ready to see you (legh see)
• nuja'rup - they are prepared to tell us (ja' tell)

Note: There is a verb ghuS, meaning "to be prepared to launch or project (something)", that never takes the suffix -rup. This verb is primarily used for torpedoes, and if no specific object is stated or implied, cha (torpedoes) is assumed by default. For example:

• cha yIghuS! - Be prepared to launch torpedoes!
• yIghuS! - Stand by on torpedoes!

The verb ghuS can also refer to rockets, missiles, energy beams, or even the action of pulling back the elastic of a slingshot - any projectile-like object traveling from one point to another. For most other instances of readiness or preparedness, however, the suffix -rup should be used.

-beH (ready, set up - devices)

• pojbeH - (the device) is set up to analyze it (poj analyze)
• labbeH - (the device) is ready to transmit data (lab transmit data)

-vIp (afraid)

• choHoHvIp - you are afraid to kill me (HoH kill)
• muqIpvIp - they are afraid to hit us (qIp hit)

This suffix is rarely used with prefixes indicating "I" or "we". Though grammatically correct, doing so is considered culturally taboo.