Crossword Genius

They regularly dip and rise, first to last (4)

Ross

I believe the answer is:

oars

I'm a little stuck... Click here to teach me more about this clue!

'they regularly dip' is the definition.
(oars dip into water)

'rise first to last' is the wordplay.
'rise' becomes 'ars' (I can't explain this - if you can you should give a lot more credence to this answer).
'first' means one lot of letters go next to another.
'last' says to take the final letters.
The final letter of 'to' is 'o'.
'ars' put after 'o' is 'OARS'.

'and' acts as a link.

Can you help me to learn more?

(Other definitions for oars that I've seen before include "Poles to propel a boat" , "Indirectly, they make waves" , "These could make you row" , "Soar with propellors" , "Sculls" .)

I've seen this clue in The Telegraph.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.