ILLY. Do not use _illy_ for the adverb _ill_. See §40.
IN, INTO. Do not confuse _in_ and _into_.
KIND. Do not precede kind by _those_ or _these_.
Wrong: I do not like _those kind_ of plays.
Right: I do not like _that kind_ of play.
KIND OF A. Do not use _a_ or _an_ after _kind of_. See §47.
LADY. Do not use _lady_ to designate sex only. It is properly used to indicate persons of refinement.
Right: Is Mrs. Johnson a colored _woman_?
Right: Mrs. Johnson is a colored _woman_, and _a lady_.
LATTER. Do not use _latter_ to refer to more than two objects. Use _last_. See §41.
LAY. Do not confuse _lay_ and _lie_. See §57.
LEARN. Do not confuse _learn_ and _teach_. _Learn_ means _to acquire knowledge. Teach_ means _to impart knowledge_.
Wrong: He can _learn_ you as much as any one can.
Right: He can _teach_ you as much as any one can.
LEAVE. Do not confuse _leave_ and _let_. Leave means _to let remain_. Let means _to give permission_.
Right: I shall _leave_ my trunk in my room.
LIABLE. Do not use _liable_ for _likely_.
Right: He is _liable_ for all that he has agreed to pay.
LIGHTNING. Do not use _lightning_ as a verb in place of _lightens_.
Wrong: During the storm, it _lightnings_ frequently.
Right: During the storm, it _lightens_ frequently.
LIKE. Do not use _like_ for _as_. _Like_ is a preposition. _As_ is a conjunction.
Wrong: He doesn't talk _like_ he did yesterday.
Right: He doesn't talk _as_ he did yesterday.
LIT ON. Do not use _lit on_ in the sense of _met with_ or _discovered_.
LOT. Do not use _lot_ in the sense of _a great number_ or _a great deal_.
Wrong: A _lot_ of people were there, She talks _a lot_.
Right: I have _almost_ completed the book.
Right: He has done _the most_ of the work.
MRS. Do not use _Mrs._ before titles; as, _Mrs. President, Mrs. Professor, Mrs. Doctor_.
MUCH. Do not use _much_ for _many_. _Much_ refers to quantity. _Many_ refers to number.
Wrong: As _much as_ five hundred people were present.
Right: As _many as_ five hundred people were present.
MUTUAL. Do not confuse _mutual_ and _common_. _Mutual_ means _interchanged_.
Wrong: John and William had a _mutual_ liking for Mary.
Right: John and William had a _common_ liking for Mary.
Right: John and William had a _mutual_ liking for each other.