Example
“Drop me a line when you arrive so I know the journey went well.”
Dictionary details
Related idioms
Expressions connected by reviewed component words or topic tags.
drop a hint
CEFR B1suggest something indirectly instead of saying it openly
fall in line
CEFR B1to obey or accept the rules and expectations set by a group or authority
sign on the dotted line
CEFR B1to commit yourself formally by signing an agreement
at the drop of a hat
CEFR B2immediately and with no hesitation when an opportunity or prompt appears
hold the line
CEFR B2to maintain a position, decision, or principle despite pressure
break the ice
CEFR B1To do or say something that eases tension and gets people talking comfortably in an unfamiliar social situation.
Source methodology
Meanings, register, CEFR, and examples come from the reviewed dictionary record. Expression notes may describe a reviewed present-day word picture or a background note; they are not presented as verified etymology.