Од ob- (“against”) + sum (“I am”).
obsum
- (with dative) I am against, do harm to.
| Conjugation of obsum (highly irregular, suppletive, no supine stem except in the future active participle, active only)
|
| indicative
|
singular
|
plural
|
| first
|
second
|
third
|
first
|
second
|
third
|
| active
|
present
|
obsum
|
obes
|
obest
|
obsumus
|
obestis
|
obsunt
|
| imperfect
|
oberam
|
oberās
|
oberat
|
oberāmus
|
oberātis
|
oberant
|
| future
|
oberō
|
oberis,
obere
|
oberit
|
oberimus
|
oberitis
|
oberunt
|
| perfect
|
obfuī
|
obfuistī
|
obfuit
|
obfuimus
|
obfuistis
|
obfuērunt,
obfuēre
|
| pluperfect
|
obfueram
|
obfuerās
|
obfuerat
|
obfuerāmus
|
obfuerātis
|
obfuerant
|
| future perfect
|
obfuerō
|
obfueris
|
obfuerit
|
obfuerimus
|
obfueritis
|
obfuerint
|
| subjunctive
|
singular
|
plural
|
| first
|
second
|
third
|
first
|
second
|
third
|
| active
|
present
|
obsim
|
obsīs
|
obsit
|
obsīmus
|
obsītis
|
obsint
|
| imperfect
|
obessem,
obforem
|
obessēs,
obforēs
|
obesset,
obforet
|
obessēmus,
obforēmus
|
obessētis,
obforētis
|
obessent,
obforent
|
| perfect
|
obfuerim
|
obfuerīs
|
obfuerit
|
obfuerīmus
|
obfuerītis
|
obfuerint
|
| pluperfect
|
obfuissem
|
obfuissēs
|
obfuisset
|
obfuissēmus
|
obfuissētis
|
obfuissent
|
| imperative
|
singular
|
plural
|
| first
|
second
|
third
|
first
|
second
|
third
|
| active
|
present
|
—
|
obes
|
—
|
—
|
obeste
|
—
|
| future
|
—
|
obestō
|
obestō
|
—
|
obestōte
|
obsuntō
|
| non-finite forms
|
active
|
passive
|
| present
|
perfect
|
future
|
present
|
perfect
|
future
|
| infinitives
|
obesse
|
obfuisse
|
obfutūrum esse,
obfore
|
—
|
—
|
—
|
| participles
|
—
|
—
|
obfutūrus
|
—
|
—
|
—
|
