The appellee bank, on or about April 28, 1964, made a loan of $12,500 to the maker of a negotiable note payable in that sum 120 days thereafter. Appellant *167had unqualifiedly indorsed the note at the maker’s request and for his accommodation to enable him to obtain the loan. The maker did not pay the note at its maturity on August 27, 1964, and the bank failed to give appellant notice of the dishonor.
The bank brought an action on the note which appellant resisted on the ground, among others, that the omission of such notice effected his discharge from liability. The District Court granted summary judgment in the bank’s favor, accepting its contention that a waiver of notice of dishonor was stipulated in the body of the note. The provision referred to, with key language italicized, is reproduced below.1
The Negotiable Instruments Law was the governing statute operative in the District of Columbia when the transaction in suit occurred. Its specifications conditioning the indorser’s liability, though now supplanted by those of the Uniform Commercial Code,2 purvey the foundation rules upon which our decision must rest.3 For an indorser without qualification the NIL forged an engagement to pay the amount of the instrument “if it be dishonored and the necessary proceedings on dishonor be duly taken.” 4 This contract it complemented with the requirement that notice of a dishonor, unless legally excused, be given to each indorser, and with the command that any indorser not furnished such notice be discharged.5 Judicial precedents exhorted strict observance of these mandates,6 even as to accommodation indorsers.7
*168Parties secondarily liable could, of course, dispense with formal notice of dishonor,8 and surely the stipulation relied on, if it had that effect, bound appellant as an indorser.9 But alleged waivers were examined with caution. They would not be inferred from doubtful or ambiguous words, nor would the words used be expanded beyond their common intendment.10 Stated affirmatively, the intention to forego notice had to be clear.11 It is by these principles that the disposition of this case made in the District Court is to be tested.
The language upon which appellant’s waiver of notice of dishonor supposedly rests is but a small fraction of a comprehensive provision cast wholly in the mold of an acceleration clause. With the possible exception of the default in payment this language alludes to, each of the numerous contingencies particularized is intimately allied with acceleration but completely alien to a breach of obligation at an unaccelerated maturity. Not only are we struck by the thought that this is a rather unusual place to put an indorser’s renunciation of notice of dishonor but, scrutinizing the provision in the light of the bank’s contention, we are unable to attach that significance to it. Our conclusion is that while the provision, properly construed, authorized the bank to elect to call for payment of the note upon the happening of an event stated without prior demand or notice of intention to accelerate, it was inefficacious to eliminate the necessity for notice to appellant of the maker’s dishonor by nonpayment at its designated maturity. '
In harmony with the interpretations sustained by the substantial weight of authority,12 we view the provision as conferring an optional power to accelerate. Although it is automatic in form, a holding that it would have become self-executing upon an occurrence enumerated would run counter to its evident purpose. Acceleration clauses are designed to benefit the holder, who should be free to decide whether in particular circumstances the authorisation will be utilized. An automatic acceleration would not only rob the holder of this choice but might well produce unintended or even harsh results.13
Thus, as an optional alternative, this provision could become operative only in consequence of affirmative action by the holder. Stated otherwise, some *169positive step on his part manifesting an election to exercise the option would become a sine qua non of acceleration,14 and what would be required is conduct so clear and unequivocal as to leave no doubt on that score.15 Presentment and demand for payment would become conditions precedent to execution of the option,16 and notice of intention to accelerate, while unnecessary if the aim is sufficiently made known in some other fashion,17 is an obvious and frequently used method of announcing what the holder has in mind.18
This analysis reveals the true role of the words “without notice or demand.” With them the instrument could be accelerated without any notice of an intention to do so and without any demand for payment of the obligation.19 The words then would perform an important function in eliminating these steps from the process by which its maturation might be hastened.
Beyond the exigencies of acceleration, however, there remained, when the parties formulated their bargain, the possibility of default in payment and the concomitant need for notice of dishonor. These two things — acceleration and notice of dishonor — were, of course, very different matters. An acceleration, had one occurred, would not have removed the necessity for notice of dishonor,20 and waiver of notice of dishonor was independent of a disclaimer of steps incidental to acceleration.21 Thus we reach the crucial question whether the provision upon which the bank relies sufficed as a relinquishment of both.
In our view, this provision does not reach beyond the orbit of acceleration. We recognize fully its capabilities as a dispensation of notice of contemplated acceleration, but to give it the broader construction — that the maker’s nonpayment upon the note’s unaccelerated due date need not be suitably proclaimed — would impermissibly strain both its language, and its tenor. It would involve the selection and non-contextual reading of several words buried deep in a voluminous clause the overpowering thrust of which is specification of the conditions for acceleration. The specific language to which we are referred, like the remainder of the provision in which it is encouched, is more reasonably susceptible to the interpretation that it deals exclusively with a notice related to acceleration. And while in this character its meaning is plain, it has at most *170only a dubious aptitude to relieve the necessity for notice of dishonor.22 In sum, we cannot say that it waives notice of dishonor in the clear and unambiguous way the law requires.23 In this conclusion, we are in agreement with other courts which have declined to construe waivers of notice contained in acceleration clauses as legitimate substitutes for waivers of notice of a dishonor by nonpayment.24
Perhaps it is unnecessary to observe, as we conclude our review, that it did not have to end this way. Written waivers of presentment for payment, of notice of dishonor and, where essential, of protest are among the commonplaces of negotiable paper. The lender who desired to rid himself of possible future need to take these steps was at liberty to insist upon such an abnegation as a prerequisite to granting the loan; many indorsers, we know, willingly acceded to such a condition. But it was incumbent upon the parties not only to reach an agreement to waive but also to express themselves with such clarity as would reasonably assure that the covenant was made.
We reverse the judgment of the District Court and remand the case with direction to enter judgment in favor of appellant.
Reversed.