отпада́ть

rare #25391verbimperfective perfective is отпа́сть

1.
to fall off, to come off, to drop off
Кра́ска отпада́ла куска́ми.
The paint was falling off in flakes.
2.
to no longer apply, to be dropped, to fall away
Тогда́ вопро́с отпада́ет сам собо́й.
In that case the question no longer applies.
of a question, doubt or possibility
3.
to pass, to go away, to disappear
И́з-за ды́ма у меня́ отпада́ет жела́ние есть.
The smoke makes my appetite go away.
4.
to break away (from), to fall away (from), to defect
От па́ртии постепе́нно отпада́ли её сторо́нники.
Its supporters were gradually breaking away from the party.
of people leaving a group or cause

Examples

Этот вариант отпадает, он слишком дорогой.
This option is out; it’s too expensive.
Штукатурка на стене постепенно отпадает.
The plaster on the wall is gradually falling off.
Если он не придёт, наш план отпадает.
If he doesn’t come, our plan is off.

Imperative
ты	отпада́й
вы	отпада́йте

па́датьto fall; to plunge; to fall; to fall on
verbimperfective
впада́тьto flow into; to fall into; to sink in
verbimperfective
напа́дкиattacks (verbal)
nounfeminine
выпада́тьto fall out; to fall on (a date); to fall to (someone's lot)
verbimperfective
запада́тьto fall in; to sink deeply (into the soul); to fall for (someone); to begin to fall
verbimperfective