Answer: nisus

AnswerCrossword Clue
NISUSA striving.
NISUSEffort.
NISUSFriend of Euryalus in Aeneid.
NISUSEuryalus' friend in the Aeneid.
NISUSEffort
NISUSEffort or impulse
NISUSImpulse
NISUSExertion
nisusan effort (exertion (the act of exerting (exert)))
nisuseffort or striving toward a particular goal or attainment; impulse