interfere

As a noun obstacles

is .

As a verb interfere is

.

As an adjective intrusive

is tending or apt to intrude; doing that which is not welcome; interrupting or disturbing; entering without right or welcome.

As a noun intrusive

is (geology) an igneous rock that is forced, while molten, into cracks or between other layers of rock.

As a verb interfere is

.

As verbs the difference between interfere and impend

is that interfere is while impend is to be about to happen or occur, especially of something which takes some time such as a process or procedure rather than just a short event "to impend" often has the connotation of threat.

As verbs the difference between interfere and engage

is that interfere is while engage is .

As a verb interfere

is .

As an adjective undefined is

lacking a definition or value.

As verbs the difference between interfere and frustrate

is that interfere is while frustrate is to disappoint or defeat; to vex by depriving of something expected or desired.

As an adjective frustrate is

vain; ineffectual; useless; nugatory.

As verbs the difference between interfere and impact

is that interfere is while impact is to compress; to compact; to press or pack together.

As a noun impact is

the striking of one body against another; collision.

As verbs the difference between interfere and inspire

is that interfere is while inspire is .

As a verb interfere

is .

As a noun nuisance is

a minor annoyance or inconvenience.