Similar to Type 5 noun suffixes (section 3.3.5), these verb suffixes have to do with the verb's role in the sentence. The first six suffixes will be noted briefly here, but illustrated more completely in section 6.2.2.
-DI' as soon as, when
DaSeHDI' as soon as you control if (SeH control)
qara'DI' as soon as I command you (ra' command)
DaneHchugh if you want them (neH want)
choja'chugh if you tell me (ja' tell)
choja'pa' before you tell me (ja' tell)
qara'pa' before I command you (ra' command)
This suffix is always used along with the Type 7 suffix -taH continuous.
SutlhtaHvIS while they are negotiating (Sutlh negotiate)
bIQongtaHvIS while you are sleeping (Qong sleep)
This is the relative-clause marker. It is described in section 6.2.3.
This marks purpose clauses. See section 6.2.4.
This suffix indicates that the sentence is a yes/no question; that is, a question which can be answered "yes" or "no." (See also section 6.4.).
cholegh'a' do you see me? (legh see)
yaj'a' does he/she understand? (yaj understand)
Questions of other types require special question words (section 6.4).
-wI' one who does, thing which does
This is the suffix described earlier (section 3.2.2) which turns verbs into nouns.
So'wI' cloaking device (So' cloak, hide)
baHwI' gunner (baH fire [a torpedo])
joqwI' flag (joq flutter, wave)
This suffix is identical to the Type 5 noun suffix -mo' and has the same meaning, due to, because of.
bIqanmo' because you are old (qan be old)
Heghpu'mo' yaS because the officer died (Hegh die, yaS officer)
This suffix is used to express a desire or wish on the part of the speaker that something take place in the future. When it is used, there is never a Type 7 aspect suffix. -jaj is often translated with may or let, and it is particularly useful when placing a curse or making a toast.
jaghpu'lI' DaghIjjaj may you scare your enemies (jaghpu'lI' your enemies, ghIj scare)
tlhonchaj chIljaj may they lose their nostrils (tlhonchaj their nostrils, chIl lose)
There are some exceptions to above rule when -taHjaj is used, however we are not sure on what those exceptions are currently.
In Klingon, there are many instances of nouns and verbs being identical in form (e.g., ta' accomplishment, accomplish). It is not known if all verbs can be used as nouns, but it is known that verbs ending in suffixes (such as -Ha' undo in lobHa' disobey) can never be nouns. The Type 9 suffix -ghach, however, can be attached to such verbs in order to form nouns. Compare the following sets:
lo' use (noun) (lo' use, make use of)
lo'laHghach value (lo'laH be valuable)
lo'laHbe'ghach worthlessness (lo'laHbe' be worthless)
naD commendation (naD commend)
naDHa'ghach discommendation (naDHa' discommend)
naDqa'ghach re-commendation (naDqa' commend again)
Nouns (formed from verbs) ending in -ghach aren't common in everyday speech. For the most part, such forms are technical or philosophical or "official" in nature.
For more information, see section 6.2.6.