at the beginning —(also: in the beginning ) initially; at first:
Besiege vs Beleaguer vs Invest vs Blockade
Besiege, beleaguer, invest, blockade mean to surround an enemy in a fortified or strong position so as to prevent ingress or egress.
At the back of sth vs On the back of sth
at the back of something—1. behind smth.:
Bad vs Badly
Bad is an adjective describing nouns or pronouns.
Benevolent vs Beneficent
Benevolent, beneficent are closely related rather than strictly synonymous terms.
Benefit vs Profit vs Avail
Benefit, profit, avail mean to do good or to be of advantage to someone.
At sight vs In sight
The expression does not correlate in meaning with the phrase at first sight—(also: at first glance) when first seen or considered, often with the implication that one’s first impression is probably wrong:
Backward vs Backwards
Backward is preferred in American usage.
Below vs Under vs Beneath vs Underneath
Below, under, beneath, underneath mean in a lower position relatively to some other object or place.
At short hand vs In short hand
at short hand—in the short term; quickly:
Axiom vs Axion
Axiom is an established truth, rule of law, or principle.
At quiet vs On the quiet
at quiet—at peace; in a state of calm or repose: