An adverb that is becoming old-fashioned, used to strongly emphasize a negation and meaning something like 'not at all' or 'under no circumstances.' It is almost always used together with 'nicht' (not).
example
Das ist beileibe nicht so einfach, wie du es dir vorstellst.
That is by no means as easy as you imagine.
Usage tips
Fixed combination with 'nicht'
'Beileibe' (by no means) is almost always used together with 'nicht' (not) to strongly emphasize a negation. The fixed order is 'beileibe nicht' (by no means/not at all).
EXAMPLE
Diese Aufgabe ist beileibe nicht unmöglich, aber sehr schwer.
This task is by no means impossible, but it is very difficult.
Elevated style
This word belongs to an elevated or slightly old-fashioned style. You are more likely to find it in written language than in everyday colloquial speech.
EXAMPLE
Ich bin mit diesem Vorschlag beileibe nicht einverstanden.
I am by no means in agreement with this proposal.
Origin of the word
'Beileibe' (by no means) comes from the old expression 'bei Leibe,' which means something like 'by my body.' It was originally an oath, which explains the word's strong, emphatic force.
EXAMPLE
Das Ergebnis war beileibe nicht das, was wir erwartet hatten.
The result was by no means what we had expected.
Compare with
synonym
beileibe vs keineswegs
by no means
'keineswegs' and 'beileibe' both strengthen a negation. They clearly say: that is not true at all. 'keineswegs' is the more normal word and can be used in many situations. 'beileibe' sounds somewhat older or more elevated and is almost always used together with 'nicht'. They are very close in meaning. If you want to speak naturally and neutrally, 'keineswegs' is usually the safe choice; 'beileibe nicht' sounds stronger and a bit more distinctive.
beileibe
Nach der langen Krankheit ist er beileibe noch nicht wieder fit.
After the long illness, he is by no means fit again yet.
keineswegs
Der neue Plan ist keineswegs so einfach, wie er zuerst klingt.
The new plan is by no means as simple as it first sounds.