Converse of object

• overcome: I want to hear from you about how we can overcome these obstacles.

• remove: The main use of the tree by people has always been to remove obstacles.

• surmount: Young people from impoverished areas often have to surmount additional obstacles to gain a better education.

• pose: Phenomena of all kinds manifest themselves in the course of an analysis, which have the effect of posing an obstacle to the treatment.

• encounter: In our own personal journey up the ladder of spirituality we encounter obstacles.

• negotiate: Chicanes require road users to negotiate an obstacle, therefore encouraging them to slow down.

Preposition: in

• path: This plan would put obstacles in the path of their return.

• way: There were obstacles in the way to his joining the regular seminary classes.

• front: There are many difficulties and obstacles in front of you which you will have to overcome.

Adjective modifier

• insurmountable: The rule of the bureaucracy remained an insurmountable obstacle, blocking the road toward socialism.

• formidable: The legacy of Cyprus's divisive recent history, including bloody ethnic fighting, is a formidable obstacle.

• insuperable: We do not see any of these matters as insuperable obstacles.

• bureaucratic: Last night West Berkshire council gave planning consent to the project, removing the last bureaucratic obstacle to construction of the laser.

• major: The issue of funding the action is still a major obstacle.

• man-made: Its value lies in the absence of coercion or man-made obstacles to the exercise of people's powers and capacities.

Modifies a noun

• course: The fax went through the same obstacle course ten years ago.

• clearance: Other aircraft should use the taxiways with extreme caution due to the reduced obstacle clearance.

• race: Not on the evidence of a decent run in another obstacle race at Cheltenham.

Noun used with modifier

• anti-tank: Anti-tank obstacles can not be located adjacent to each other; there must be a gap of at least 4 base widths.

• marathon: He did not want to go over the bridge and we had to turn around in one of the marathon obstacles.