Solutions prevent from drifting low to the right has 4 entries with similar clues

• 6-letter words
• groyneA low wall built out into the sea from a beach to prevent erosion and drifting
• 7-letter words
• anchorsThey may be dropped to stop drifting of ships
• shudderShake from/with fear
• 8-letter words
• deadlockSituation from/in which no progress can be made